You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jonathan Lewis here.

ASSISTANT: How can I assist you at this moment?

USER: I have planned for a round trip to Washington, can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure Jonathan Lewis, I will help you with that. Can I have your travel dates please?

USER: Thank you. I am planning to leave my location on 10/11 and please book my return ticket also on 10/13.

ASSISTANT: Ok, please let me know airport code of your journey locations.

USER: I will prefer IAD as my origin and destination airport code.

ASSISTANT: Ok, please wait a moment to check flight availability.

USER: Ok, take your time.

ASSISTANT: I have found a flight in Delta airlines which is having connection 1 and price of the ticket is 100. Shall I proceed with booking?

USER: That's fine for me, I am ok with this. You can proceed with booking.

ASSISTANT: Ok Jonathan Lewis, your ticket booking has done and flight number is 1006.

USER: Thank you for your help in booking of my ticket.

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