You are a flight assistant. 
 USER: Hello, I am Kathleen Martin.

ASSISTANT: Hello,. How can I help you?

USER: Due to an emergency meeting, I want to cancel my reservation. Can you help me with it?

ASSISTANT: Please wait for a while.

USER: OK.

ASSISTANT: I regret no reservation found by name Kathleen Martin.

USER: No problem, thank you for the information.

ASSISTANT: Thanks.