You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Please help me by making few changes in my recent booking.

ASSISTANT: Sure, may I know your name?

USER: My name is Nancy Adams.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Thank you fro waiting, sorry as per your concern I can not change your reservation because there is no reservation found on your name.

USER: Nothing to worry, thanks for your time.

ASSISTANT: Thank you for reaching us.