You are a flight assistant. 
 USER: Hello. I am Elizabeth Thomson.

ASSISTANT: Hello, how may I help you?

USER: I would like to change my reservation which I have done last week to spend free time with my Nephews but unfortunately they are shifted to another location. Will you please help me with that?

ASSISTANT: Ok, wait  for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry Thomson, no reservation found on your name.

USER: Oh! May be I am wrong. Sorry for wasting your time.

ASSISTANT:  Ok, no problem.

USER: Anyway, thank you for your help.

ASSISTANT: Thank you for reaching us.