You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Dorothy Davis. I just want to cancel my recent reservation. Can you please help me with that?

ASSISTANT: Sure, my I know your name Please?

USER: I have mentioned above.

ASSISTANT: OK, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for your patience, on your name no reservation.

USER: OK.

ASSISTANT: Thank you for choosing us.

USER: Thank you.

ASSISTANT: Have a nice day.