You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

USER: Please book a flight on my name Mark White, to visit the historical places in Denver, DEN.

ASSISTANT: Sure, may I know from where you want to start?

USER: Boston, BOS is my boarding point.

ASSISTANT: Ok, when you are going to travel?

USER: I planned to travel on 03/11-03/13.

ASSISTANT: Ok, please share your budget.

USER: I need a flight ticket with a fare of 1000.

ASSISTANT: Ok, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight named as UA with 1012 number and the fare is 100.

USER: Kindly reserve my ticket.

ASSISTANT: Ok, your ticket has been confirmed with a whistle stop.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.