You are a flight assistant. 
 USER: Hello. I am Anna Campbell.

ASSISTANT: Hello, how may I aid you today?

USER: I have a reservation to attend an exam. But it has been postponed due to some issues. Can you please cancel my recent reservation?

ASSISTANT: Sure, I will help you to cancel your reservation. Please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name.

USER: Ok, no worries. Thanks for your response.

ASSISTANT: Thank you for visiting us, we hope see you again.