You are a flight assistant. 
 USER: Hello, Donald Harris here.

ASSISTANT: Hello Donald, how can I assist you?

USER: My family want to go for a vacation, could you please help me to book a flight ticket for that?

ASSISTANT: Sure, can I know the travelling dates?

USER: My preferable dates are from 09/07 to 09/09.

ASSISTANT: OK, could you please tell me the places you want to travel?

USER: Sure, I want to travel from DTW to IAH. Make sure that I need a 0 connection flight.

ASSISTANT: OK, give me a moment.

USER: OK.

ASSISTANT: I had found a flight with flight number 1020 of UA airlines. The price of ticket is 600. Can I proceed? It is with a connection 0.

USER: OK, then please proceed for booking.

ASSISTANT: OK, your ticket has been booked. Thank you for reaching us.

USER: Thank you for booking.

ASSISTANT: Have a safe flight. You are welcome.