You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of assistance you are looking for?

USER: As my plan to shoot a film at my home town got postponed due to some budget issues, I need to change my existing reservation.

ASSISTANT: Ok.

USER: Can you assist me in changing my existing reservation?

ASSISTANT: Sure, I am here to assist you.

USER: Thank you.

ASSISTANT: May I know your name to check the previous reservation?

USER: I am James Hernandez.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: It's ok, I think the reservation has done with another airline.

ASSISTANT: Ok.

USER: Thank you for the information.

ASSISTANT: Thank you for approaching us.