You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I abet you?

USER: Due to sudden rainfall at my source, I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Ok, please provide the name on which you have booked your ticket?

USER: Sure, I am John Taylor.

ASSISTANT: OK. Sorry, no reservation has been registered with us on your name.

USER: Ok. Thank you for your help.

ASSISTANT: Thanks for reaching us, have a nice day.