You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I oblige you?

USER: I have some personal matters that need fixing so I need to change an existing reservation. Can you please help me in that?

ASSISTANT: Sure, may I know your name to check the reservation list?

USER: My name is Margaret Thompson.

ASSISTANT: Please wait for a while. I will revert to you.

USER: Sure.

ASSISTANT: Thanks for your valuable time.

USER: That's not a issue. I will wait for your response because I need your help.

ASSISTANT: There was no reservation found on your name.

USER: Ok, not a problem.

ASSISTANT: Thank you for consulting us.

USER: Thanks for your kind information.

ASSISTANT: Have a colourful day.