You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Robert Harris.

ASSISTANT: How may I guide you today?

USER: Will you help me in booking the flight ticket from DCA to DFW?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: My travelling dates are Jan 20 and Jan 22.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: I need a flight with single connection.

ASSISTANT: Based on your information, I have found a flight with 1 connection having with the fare of 100 provided by UA airlines. Are you ok with this flight?

USER: Sure, you can proceed with the booking.

ASSISTANT: Ok, your ticket has been confirmed in flight number 1000.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us, have a great journey.