You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Benjamin Johnson here.

ASSISTANT: How may I help you?

USER: I want to book a flight from DCA to DEN, can you please help me in booking a flight ticket?

ASSISTANT: Sure, I am here to help you. When you are willing to travel?

USER: Sure, my travel dates are from 03/21 to 03/23.

ASSISTANT: Just a moment.

USER: Ok, take your time.

ASSISTANT: As per your data, I found a flight with Frontier airlines and the ticket fare is 100 only. Shall I proceed for booking?

USER: Ok, please proceed with booking.

ASSISTANT: Johnson, your ticket is booked with the flight-1001.

USER: Thank you for your service.

ASSISTANT: You are most welcome.