You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Jack Mitchell here, I would like to travel with my friend, can you please help me to reserve my ticket from DEN to IAD?

ASSISTANT: May I know your travelling dates please?

USER: Sure, my preferable dates of journey is from 11/16 to 11/18. Please make sure that the price limit is 200.

ASSISTANT: There is a flight with single connection, can I proceed for booking in that flight it costs you 200?

USER: Ok, please go ahead with the ticket booking.

ASSISTANT: Your booking is confirmed in Southwest airlines.

USER: Thank you for your help in booking my ticket.

ASSISTANT: Thank you for choosing us.