You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Sarah Thompson. I would like to book a flight ticket from DEN to SEA.

ASSISTANT: May I know your travelling dates?

USER: Sure, I am planning to start on 04/25 and return back on 04/27.

ASSISTANT: There is a flight for you with connection 1 and and price 200, shall I book it?

USER: Ok, please proceed.

ASSISTANT: Ok, your ticket has been done with flight-1002 on Frontier airlines.

USER: Great! Thank you for the service.

ASSISTANT: Welcome, have a nice day.