You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my reservation as I am admitted in the hospital, can you please do that for me?

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal. May I know your name please?

USER: That's fine. My name is Mark Harris.

ASSISTANT: Thank you for reaching us.