You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: Kevin Adams here. I am planning for a trip from DFW to IAD, can you help me over that?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Ok, my travelling dates are from Aug 04 to 06.

ASSISTANT: Noted. Do you have any preferences?

USER: Yes, I need a connecting flight.

ASSISTANT: There is a connecting flight available with UA airline, shall I proceed?

USER: Yes, you can proceed.

ASSISTANT: Your booking is done with flight number 1003. Happy journey.

USER: Thanks for your time.

ASSISTANT: You are welcome, have a nice day.