You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please help me in booking a flight tikcet to DCA from LAS?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travel dates are from Mar 24 to Mar 26.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any class preferences?

USER: I would like to travel in economy class.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I need to depart in the afternoon.

ASSISTANT: Can you please provide your name to proceed further?

USER: I am Mark Walker.

ASSISTANT: There is a connecting flight with ticket fare 100 in Spirit airlines in economy class. Is it ok for you?

USER: Yes, I am ok with that.

ASSISTANT: Your booking is confirmed with flight number 1007. Depart time is 18:00 hours and arrival time is 7:00 hours.

USER: Thank you.

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