You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to visit Houston Zoo with my friends, please help me in booking a ticket from PHX to HOU.

ASSISTANT: Sure, let me know your connection limit.

USER: I am looking for a connecting flight.

ASSISTANT: Please share your planned trip dates.

USER: My planned trip dates are on Sept 17 and Sept 19.

ASSISTANT: Do you have airlines preference?

USER: Any airline is comfortable for me.

ASSISTANT: Is there any other specifications?

USER: I would like to depart in the evening.

ASSISTANT: May I know your name?

USER: My name is Thomas Campbell.

ASSISTANT: We found a flight with single connection and your depart time evening 20:00 PM. Shall I proceed for booking?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been confirmed with Southwest airlines and economy class.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.