You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My plans to visit Dallas has cancelled, please help me to cancel my recent reservation.

ASSISTANT: Sure, may I know your good name please?

USER: My name is Kimberly Roberts.

ASSISTANT: Ok, hold on for a moment please.

USER: Ok, take your own time.

ASSISTANT: Sorry to say this Kimberly, there are no reservation under your name.

USER: Ok, no problem.\.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thank you for your information.