You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Can you please help me in changing my recent reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Sure, I will help you in changing the reservation. May I know your name please?

USER: Sure, my name is Kevin Phillips.

ASSISTANT: Sorry, there are no reservations found.

USER: Oh! That's ok, thank you for giving the information.

ASSISTANT: Thank you for reaching us.