You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sarah Lewis.

ASSISTANT: How can I assist you now?

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

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Sorry Sarah, there is no reservation found on your name.

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

ASSISTANT: Thank you for approaching us, have a nice day.