You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am looking for a flight from 12/24 till 12/26. can you help me out?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My location airport codes are from DCA to LAX.

ASSISTANT: Can I have your name?

USER: Myself Justin Williams.

ASSISTANT: Justin, there is a flight available for you from Spirit airlines with ticket price of 100. Shall I proceed with booking?

USER: Please proceed with it.

ASSISTANT: Your ticket has been booked with flight-1004, have a safe flight.

USER: Thank you for booking the flight ticket.

ASSISTANT: Welcome, thank you for choosing us.

USER: Welcome.