You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Joshua Smith here.

ASSISTANT: How can I help you today?

USER: I would like to visit Dallas for a business meeting, so can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure, I can help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Can you please let me know your travel dates for booking flight ticket?

USER: Sure, I am planning to go on 08/05 and please book a return ticket on 08/07.

ASSISTANT: May I know your preferable airport code names?

USER: Sure, I want to travel from DCA to DFW.

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

USER: I will wait for your response.

ASSISTANT: I have found a flight in this route, connection limit of this airline is 1 and price is 100. Shall I confirm this flight ticket for you?

USER: That's fine, you can proceed with booking.

ASSISTANT: Your flight ticket is booked successfully, airline is Delta and flight number is 1018.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Welcome.