You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joseph Johnson.

ASSISTANT: How may I help you?

USER: I would like to cancel my recent reservation, my baseball tournament has been rescheduled to future dates. Can you please help me in cancellation?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: I have found your reservation.

USER: Ok, please cancel the ticket.

ASSISTANT: Sure, your ticket is cancelled successfully.

USER: Thank you for your immediate service in cancellation process.

ASSISTANT: Most welcome.