You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Sure, I am happy to help you with that. Give me a minute.

USER: Thank you. Sure, take your time.

ASSISTANT: I am sorry to say that there is no reservation found. May I know your name please?

USER: Sure, my name is Paul Harris.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your information.