You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, may I know your name?

USER: William Mitchell here.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: I found your reservation and cancelled it.

USER: Thank you.

ASSISTANT: Thank you for choosing us.