You are a flight assistant. 
 USER: Hi, I am Linda Johnson.

ASSISTANT: Hello, how may I assist you today?

USER: I planned to celebrate Valentine's Day with my loved ones at DC - IAD, so please book me a flight ticket.

ASSISTANT: Sure, may I know your travelling days?

USER: Sure, my travelling dates are on 02/13 to 02/15.

ASSISTANT: Please share  your origin airport code?

USER: My origin is New York, NY - EWR.

ASSISTANT: We found a flight 1004 in Delta airline the price is 200 with one halt.

USER: Please proceed for booking.

ASSISTANT: Your booking is done.

USER: Thank you so much.

ASSISTANT: Thank you for opting us.