You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I'm Linda Clark.

ASSISTANT: Yes, Clark.

USER: My business meeting has been postponed. So, I would like to change my existing reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure Clark, let me check previous reservation on your name. Sorry Clark, there is no reservation found on your name.

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

ASSISTANT: Thank you for reaching us, get back to us if you have any queries.

USER: You are welcome.