You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Betty Edwards.

ASSISTANT: How may I address you today?

USER: Can you help me in changing my recent reservation, as my interview is postponed?

ASSISTANT: Sure, please wait a moment I will check the reservation list.

USER: Ok.

ASSISTANT: Thanks for waiting, we did not find any reservation by this name.

USER: That's ok, thank you for helping.

ASSISTANT: Thanks for reaching us.