You are a flight assistant. 
 USER: Hi. Daniel Mitchell here.

ASSISTANT: Hello Daniel, how may I help you today?

USER: Reserve a flight ticket that is for my airport codes from DEN to DCA.

ASSISTANT: Sure, can you please provide me with your dates of travel?

USER: My preferable dates for travel are 10/28 to 10/30. I am looking for a connecting flight.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: There is a flight with the connecting flight of fare 100 and the airline is Southwest, are you ok with this booking?

USER: I am ok with the fare. You can reserve the flight ticket. Thank you.

ASSISTANT: Ok, the flight with the number 1017 has been reserved under your name.

USER: Thanks for booking my flight ticket.

ASSISTANT: You are welcome, have a safe journey.