You are a flight assistant. 
 USER: Hi, I am Timothy Johnson.

ASSISTANT: Hello, how can I assist you today?

USER: I want to cancel my recent reservation due to my badminton tournament got cancelled.

ASSISTANT: Sure, please wait a while. I will check and revert you.

USER: Sure.

ASSISTANT: Thanks for waiting. Unfortunately there is no reservation found with your name.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.