You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carol Robinson.

ASSISTANT: How can I assist you?

USER: Actually I want to cancel my recent reservation.Due to some problems, can you help me out?

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry Carol Robinson, there is no previous reservation matching with your name to cancel.

USER: It's fine. Thank you for your help.

ASSISTANT: Thank you.