You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Mitchell.

ASSISTANT: How can I assist you?

USER: I would like to cancel my reservation as I am leaving for hometown, can you please help me out?

ASSISTANT: Sure Sandra, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say that, there is no reservation found on your name.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for approaching us.