You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation due to some health problem, help me in cancelling my recent reservation.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Thomas Lewis.

ASSISTANT: Ok,please wait for a while, I will check and revert to you.

USER: Sure.

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

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us, have a good day.