You are a flight assistant. 
 USER: Hi, I am Cynthia Thomas.

ASSISTANT: Hello,. How may I help you?

USER: I want to book a flight ticket to Seattle with price under 200. Can you please help me with it?

ASSISTANT: Ok. Please let me know your airport codes?

USER: Airport codes are SFO-SEA.

ASSISTANT: Please provide travel dates?

USER: Travel dates are 03/19 and 03/21.

ASSISTANT: Ok. Ticket is available with price 100, airline is UA. Flight connections is 1 with number 1004.

USER: Please proceed with booking.

ASSISTANT: Ticket is booked to Seattle.

USER: Thanks for the help.