You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need to cancel my recent reservation due to some health issues, can you help me in doing that?

ASSISTANT: Sure. May I know your name?

USER: I am Andrew Turner.

ASSISTANT: Let me check details with your recent reservation.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation by your name.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you.