You are a flight assistant. 
 USER: Hello, I am Linda Thomas.

ASSISTANT: Hello, how may I support you?

USER: I need your assistance in changing my earlier reservation as my arts expo venue is shifted to other venue. Will you help me out in changing my reservation?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for being waiting. Unfortunately, there is no reservation found on your name.

USER: Ok, no problem. Thank you for prompt response.

ASSISTANT: Thanks for consulting us, have a nice day.