You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Due to some emergency i need to cancel my recent reservation can you help me in cancelling my reservation?

ASSISTANT: Sure, may I know your name please?

USER: I am Ronald Harris.

ASSISTANT: Ok, please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: No problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.