You are a flight assistant. 
 USER: Hi, I am Charles Jones.

ASSISTANT: Hello, how may I assist you?

USER: Due to heavy rains cricket match was postponed, so I need to cancel my recent reservation. Can you please help me out?

ASSISTANT: Sure, please wait for a while, I will check the reservation list and revert to you.

USER: OK.

ASSISTANT:  I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Ok, no problem.

ASSISTANT: Thank you for opting us.

USER: Thank you.