You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I am Nancy Parker. I like to change my reservation for some cause, can you help me with that?

ASSISTANT: Sure, I can help you with that. Please allow me a moment to check the details.

USER: Sure.

ASSISTANT: Nancy, I have checked and see that there is no reservation found under your name.

USER: That's fine. Thank you.

ASSISTANT: You are welcome. Thank you for contacting us.