You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Owning to an emergency, I want to cancel my recent reservation.

ASSISTANT: Sure, I will help you. Please let me know your name to check your registered details?

USER: Thank you, my name is Deborah Collins.

ASSISTANT: Thank you for your details.

USER: Ok.

ASSISTANT: Sorry, there is no reservation is found on your name in my records.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thank you for your information.