You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Stephen Anderson. I want to cancel my reservation, can you help me in that?

ASSISTANT: Sure, I can help you in cancelling your reservation. Let me check for your reservation status in our database. I have found your reservation, shall I cancel it?

USER: proceed for booking.

ASSISTANT: Shall I cancel your reservation?

USER: Yes cancel my reservation.

ASSISTANT: I have cancelled your reservation successfully.

USER: Thank you for your help.

ASSISTANT: You are welcome, thank you for choosing us.