You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Lisa Scott.

ASSISTANT: How may I aid you?

USER: My exam is cancelled, so can you help me to cancel my reservation?

ASSISTANT: Sure, I will help you.

USER: Sure, please check.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Sorry, no reservation has been found on your name in our database.

USER: That is fine, not an issue. Thank you for your time.

ASSISTANT: Thank you for reaching us.