You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Please help me in booking flight ticket from SEA to DFW.

ASSISTANT: Sure, can you please share your travelling dates?

USER: My trip dates are Sept 19 to Sept 21.

ASSISTANT: Ok, may I know your name please?

USER: Justin Lewis here.

ASSISTANT: Do you need any connection in between the journey?

USER: I need to travel in connecting flight.

ASSISTANT: Please share your specifications.

USER: I prefer to travel in economy class.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for your time, we found a connecting flight with number 1009 at a price of 100 in economy class provided by Southwest airlines.

USER: You can proceed.

ASSISTANT: Sure, your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a  nice day.