You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: I want to cancel my reservation due to some health issues, so help me.

ASSISTANT: Sure, please provide your name.

USER: My name is Helen Adams.

ASSISTANT: Please wait for a while, I will check the reservation list and revert to you.

USER: Sure.

ASSISTANT: Thanks for your time, no reservation found on your name.

USER: No issues, thanks for your support.

ASSISTANT: Thank you for choosing us.