You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Frank Smith here. I would like to visit Washington to meet my old friends there. Can you please help me out with booking of a flight ticket?

ASSISTANT: Sure, I can aid you with that.

USER: Thank you.

ASSISTANT: Could you please mention your preferable airport code names?

USER: Sure, I want to travel from ATL to IAD.

ASSISTANT: May I know your travel dates for booking flight ticket?

USER: Sure, I am planning to leave on 06/13 and please book my return ticket on 06/15.

ASSISTANT: Please hold on a moment, I will check flight availability.

USER: Ok, take your time.

ASSISTANT: I have found a flight in this route, connection limit of this airline is UA and flight number is 1029. Are you comfortable with this flight?

USER: If it is single connected, you can proceed with booking.

ASSISTANT: Yes, connection limit of this airline is 1. Your flight ticket is booked successfully.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.