You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dorothy Baker.

ASSISTANT: How can I assist you?

USER: Due to some health issue I want to cancel my trip. Can you please help me?

ASSISTANT: Dorothy Baker, that's sad.What can I do for you?

USER: As I said before I want to cancel my reservation.

ASSISTANT: Sure, let me check with your existing reservation.

USER: Ok.

ASSISTANT: Thanks for reaching us. Take care of your health.