You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Robert Garcia.

ASSISTANT: Robert Garcia, how can I render you today?

USER: I am looking to book a flight ticket to visit Washington. Can you help me for booking a flight ticket from DFW to IAD?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: My travelling dates are Oct 21 and Oct 23.

ASSISTANT: Ok, do you have any specifications?

USER: My return time is morning.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Make sure that my connection limit should be 1.

ASSISTANT: I found a flight for you with Hawaiian Airlines and it costs you 100. Shall I proceed to reserve a seat in this single connecting flight?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked with 1002 flight number.

USER: Thank you for booking.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.

USER: Welcome.