You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Welcome to flight booking agency, may I know your concern of approaching us?

USER: My name is Christine Lopez. Actually, I got admitted in a hospital due to some health issues.So I prefer not to travel, could you help me in cancelling my reservation?

ASSISTANT: Sure, I am gleeful to help you.

USER: That's so great to hear.

ASSISTANT: Could you wait for a minute so that I will help search your previous reservation?

USER: Sure, take your finest time.

ASSISTANT: Sorry for the trouble, there is no reservation found on your name.

USER: That's so sad to hear.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your time.