You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you at this moment?

USER: Catherine Lewis here. Please reserve a flight ticket from SEA to DCA.

ASSISTANT: Sure, I will help you in booking flight ticket. Can you please mention your preferable travel dates for booking flight ticket?

USER: Ok, my travelling dates are from 12/07 to 12/09.

ASSISTANT: Please give me a moment, I will check flight availability in this route.

USER: Ok, take your time.

ASSISTANT: JetBlue airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I proceed with this?

USER: Ok, please proceed for booking.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1029. Thank you for contacting us, have a nice day.