You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Charles Wilson here.

ASSISTANT: How may I assist you?

USER: I'm planning to visit my client office, can you book a ticket form IAD to DFW?

ASSISTANT: Sure, I will help you. When would you like to plan your journey?

USER: My planned departure and return travel dates are 2nd and 4th of July.

ASSISTANT: Do you need a connecting flight or a direct flight?

USER: Yes, I need single connected flight.

ASSISTANT: May I know your departure and return timings of your journey?

USER: I want to return in the morning time.

ASSISTANT: Do you have any other specifications?

USER: No, I don't have.

ASSISTANT: I found an economy class in Frontier airlines with fare 200 and it is a connecting flight. Can I book your ticket?

USER: That's fine, you can proceed for booking the ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1012.

USER: Thank you so much for your help.

ASSISTANT: Thank you for approaching us.