You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Anna Lee.

ASSISTANT: How can I help you today?

USER: I had planned to go on a trip, but it was cancelled.Can you cancel my recent reservation?

ASSISTANT: Sure, I can help you with that. Please allow me a moment to check the details for you. Anna, I see that there is no reservation found under your name.

USER: That's not a problem. Thank you for your help.

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