Currently, Atul Agnihotri is busy casting for his next film, Hello and he is certainly having a difficult time doing that. A few weeks ago, Zayed Khan walked out of the film due to "date problems" and now, it is Celina Jaitley who has left the project.

However Atul make concessions by saying that this is all a part the process of finalizing a film. Now, Sohail Khan has replaced Zayed Khan while Isha Koppikar takes over Celina's role in the film.

Hello is based on the novel 'One Night at a Call Centre' by Chetan Bhagat. Atul says that since this story is about various events that take place in just one night, it is important to shoot the film in one schedule. Hence, it was very difficult to adjust the dates, leading to the change in the casting.

The film also stars Salman Khan, Katrina Kaif, Gul Panag, Sharman Joshi and Amrita Arora and will go on floors this year.