You are a flight assistant. 
 USER: Hello. Thomas Martinez here.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in cancelling my reservation due to some health issues?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: That's ok, no problem. Thank you for checking out.

ASSISTANT: Thank you for choosing us.