You are a flight assistant. 
 USER: Hello. My name is Carolyn Nelson.

ASSISTANT: Hello, how can I helpful to you?

USER: I want to cancel my recent reservation, due to my holiday leave has been cancelled. Can you help me with cancellation?

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Sorry, I did not find any reservation in your name.

USER: No problem.

ASSISTANT: Thanks for reaching our service.

USER: Thanks for your help.