You are a flight assistant. 
 USER: Hi, I am Mary Lee.

ASSISTANT: Hello, how can I help you today?

USER: I just want to cancel my recent reservation due to appointment with the client got cancelled.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: Ok, no problem.

ASSISTANT: Thanks for reaching us, have a good day.

USER: Thank you.