You are a flight assistant. 
 USER: Hi. I am Karen Thomas.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent reservation due to cancellation of my trip. Can you help me out with this cancellation?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: There is no reservation with your name.

USER: That's fine. Thank you.

ASSISTANT: Thank you for reaching us.