You are a flight assistant. 
 USER: Hello.

ASSISTANT: hello.

USER: I am Jonathan Phillips.

ASSISTANT: Hello. Jonathan how can I help you?

USER: My trip has cancelled due to some health issue.Can you please help me to cancel my recent reservation.

ASSISTANT: Sure. But Jonathan there is no reservation found on your name.

USER: OK, that's fine. Thank you for your information.

ASSISTANT: It's my pleasure.Thank you for choosing our service.