You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, good evening! How can I assist you?

USER: Please reserve me a flight ticket from IAD to SEA.

ASSISTANT: Sure, I'm glad to help you with that. Can you please provide the dates on which you are planning to depart and arrive?

USER: My travel dates are Nov 21 and Nov 23.

ASSISTANT: How many stop overs do you need in between your journey?

USER: I prefer connecting flight for this trip.

ASSISTANT: Are you ok with economy or business class flight?

USER: I am comfortable with any class.

ASSISTANT: Please let me know if you have any other specifications. I'll search for the flights according to that.

USER: I would like to depart in the afternoon time.

ASSISTANT: Ok, can I have your good name please?

USER: I am Rachel Davis.

ASSISTANT: Thanks for providing your journey details, please wait for a while.

USER: Sure.

ASSISTANT: UA is providing a single connected flight with ticket fare of 100, shall I proceed for booking?

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: As per your confirmation, I have successfully booked you an economy class ticket in flight-1000. Have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us, hope we will meet again.