You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today from my end?

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 am here to help you out. Please provide me your name to check the reservation status.

USER: Sure, my name is Betty Allen.

ASSISTANT: Sorry Betty Allen, there is no active reservation on your name in our database.

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

ASSISTANT: Thank you for reaching us.