You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you for today?

USER: Owning to an emergency, I want to cancel my recent reservation. Can you please help me out?

ASSISTANT: Sure, could you please provide your name to check the details of your reservation?

USER: Sure, my name is Helen Moore.

ASSISTANT: Sorry Helen, I did not found any reservation on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for contacting us. Have a pleasant day.

USER: Thank you for your information.