You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: I am Angela Rodriguez. Can you please help me in cancelling my flight ticket?

ASSISTANT: Sure, I will help you with that.

USER: Thank you. Sure, I will wait for your response.

ASSISTANT: Please wait a moment. Sorry Angela Rodriguez, no reservation has found  under your name to cancel.

USER: Ok, no problem with that one. I think it is not booked properly. Thank you for your help.

ASSISTANT: Thank you for choosing us, have a good day.

USER: Welcome.