You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Nicole Wilson here.

ASSISTANT: How may I help you today?

USER: I am looking for a flight ticket with price below 500. Can you book it?

ASSISTANT: Sure, I am mirthful to help you in booking process. Will you please share your travel dates?

USER: Yes, my travel dates are from Jan 25 to Jan 27.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: My airport codes are from DEN to DCA.

ASSISTANT: Do you have any class preference?

USER: That does not matter. Any class will be ok for me.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I am looking for a single connecting flight.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: Flight 1009 in Southwest airlines is available for you with 1 stopover and it costs you 100. Can I proceed?

USER: You can book it. I am ok with the flight ticket fare.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a safe flight.