You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

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

ASSISTANT: Can I know your name please?

USER: My name is Margaret Brown.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found on your name to change.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.