You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to travel from IAH to DTW, please help to book my flight ticket.

ASSISTANT: Your travelling dates please?

USER: Thank you. I have to depart on May 3rd and return back on May 5th.

ASSISTANT: May I know your connection limit please?

USER: I need a flight having single connection.

ASSISTANT: Is there any thing else?

USER: No.

ASSISTANT: There is a flight with single connection in Southwest airlines, can I proceed for booking in 1000 flight?

USER: Yes, you can book the ticket for me.

ASSISTANT: On which name can I proceed for booking?

USER: My name is Margaret Young.

ASSISTANT: Your booking is done in economy class.

USER: Thank you so much.

ASSISTANT: Thank you for choosing us.