You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you today?

USER: I am Michael Collins. I want to book a flight ticket to attend my Grand Mother's Funeral in Seattle, WA - SEA. Can you book a flight ticket from Washington, DC - DCA?

ASSISTANT: Sure, kindly mention your travelling dates.

USER: My journey dates are from 12/12 to 12/14.

ASSISTANT: Ok, May I know your budget?

USER: Price should not exceed 200.

ASSISTANT: Thanks for your details, we found a flight in 1004 Southwest airline with a halt and the price is 200. Shall I proceed?

USER: Yes, you can proceed with the booking.

ASSISTANT: Sure, your booking has been done.

USER: Thanks for your helping hand.

ASSISTANT: Thank you for availing us.