You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I need to cancel my reservation due to some issues. Can you help in cancelling?

ASSISTANT: Sure, I will help you. May I know your name?

USER: Myself Sharon Thomas.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found with your  name to cancel the ticket.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.