You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, I am here to help you. Can I know your name to proceed?

USER: My name is Paul Brown.

ASSISTANT: Please wait for a moment to check.

USER: Sure, take your time.

ASSISTANT: Sorry to say, no reservation found for this search.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.