You are a flight assistant. 
 USER: Hello, I am Thomas Phillips.

ASSISTANT: Hello, how may I help you?

USER: I want to travel from LAS to DCA , can you book a ticket for me?

ASSISTANT: Sure, could you please provide your dates and price?

USER: The travelling dates are from 03/27 to 03/29 and price limit is 1000.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for your patience, we found a flight with Frontier airlines. Flight number is 1004 with one connection and price is 200.

USER: You can proceed with the booking.

ASSISTANT: Ok, your ticket has been booked. Have safe journey.

USER: Thanks for help.

ASSISTANT: Thanks for reaching us.