You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am David Garcia.

ASSISTANT: Ok.

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

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Ok, your reservation been found and successfully cancelled.

USER: Ok, thank you for your services.

ASSISTANT: Most welcome.