You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: My exams has been postponed so, I want to cancel my recent reservation.

ASSISTANT: Sure, we are glad to help you with cancellation. May I know your name?

USER: Sure, I am Susan Lopez.

ASSISTANT: Ok, please wait for a while, to check the status of your reservation.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting, there was no reservation found on your specified name.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for availing us.