You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I need to book a flight ticket from IAH to SEA, Can you please help me for booking?

ASSISTANT: Sure, when you are willing to travel?

USER: I would like to travel on 03/19 to return on 03/21.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your specific timings for your depart and return flights?

USER: No.

ASSISTANT: May I know your good name please?

USER: John Thompson here.

ASSISTANT: Do you have any other specifications for this trip?

USER: I am comfortable with economy clas.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found a connecting flight 1012 in Southwest airlines at the cost 400. Shall I proceed for booking?

USER: Ok, proceed for booking.

ASSISTANT: Your booking is done with economy class.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.