You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to cancel my reservation?

ASSISTANT: Sure, may I know your name?

USER: My name is Thomas Anderson.

ASSISTANT: Please wait for a moment to check.

USER: Sure.

ASSISTANT: I have found your reservation under your name, I have cancelled it.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.