You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Elizabeth Walker, I want to change my existing reservation due to bad weather from couple of days. Could you please help me?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry there is no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thanks for connecting us.

USER: Thanks for your information.

ASSISTANT: Have a nice day.