You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, May I know your good name? please.

USER: Yes, My name is Rebecca Hernandez.

ASSISTANT: OK,How can I assist you?

USER: We friends were planning to cancel my tour. So, I want to cancel my recent reservation.

ASSISTANT: Sure, Just a minute I will check and revert you.

USER: Sure, I will wait for your reply.

ASSISTANT: Thank you for waiting.

USER: You are welcome.

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

USER: OK, Thank you.

ASSISTANT: Thank you.