You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to meet my friend at Washington, DCA. Could you please help me with booking a flight ticket from Seattle, SEA?

ASSISTANT: Sure, may I know your name?

USER: Sure, myself Margaret Lee.

ASSISTANT: Thank you. Please help me with your travel dates.

USER: Ok, my planned travel dates are from Jan 30 to Feb 01.

ASSISTANT: Sure, is there any class preference?

USER: I always prefer economy class only.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your response. Please make sure that, I need a connecting flight in my journey.

ASSISTANT: There is a flight having single connection in Southwest Airlines and the ticket fare is 100 only. Flight departs at 7:00 hours and arrives at 23:00 hours. Is that ok for you?

USER: That's perfect, please proceed with that flight ticket booking.

ASSISTANT: Your ticket is booked in economy class and your flight number is 1015.

USER: Thank you very much in reserving my ticket.

ASSISTANT: You are welcome and have a safe flight.