You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I would like to cancel my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure, We are here to help you.

USER: Thank you for accepting my request.

ASSISTANT: Can I know your name?

USER: Myself Sarah White.

ASSISTANT: Please wait a while.

USER: Ok, I will wait.

ASSISTANT:  Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to cancel it.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.