You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I support you today?

USER: I want to cancel my recent reservation due to my illness. Will you help me in cancelling my ticket?

ASSISTANT: Sure, I am happy to help you. May I know your name?

USER: I am Kevin Thomas.

ASSISTANT: Ok, please wait for a while, I will check the existing reservation on your name.

USER: Sure.

ASSISTANT: Thank you for being patient, we are sorry to say that there is no reservation found on your name.

USER: No problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your quick service.