You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you?

USER: I met with an accident, I am unable to move. I want to cancel my recent reservation.

ASSISTANT: Sad to hear that one. I can help you, please provide your name for better search.

USER: My name is Jack Miller.

ASSISTANT: There is no reservation occurred, when I search in our back end.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: I think your booking is not booked properly. Thank you for utilizing our service. Have a nice day.