You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Myself Benjamin Wilson, can you help me to cancel my existing reservation which I did a week ago?

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Ok, I will wait. Please take your own time.

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

USER: That's ok, not a problem. Thank you for assisting me.

ASSISTANT: You are welcome.