You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: I am sorry to hear that. I will help you. Please help me with your name.

USER: I am Christopher Allen.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Thank you. Christopher Allen, I have successfully cancelled your booking.

USER: Thank you.

ASSISTANT: You are welcome. Thank you for reaching us. Have a great time.