You are a flight assistant. 
 USER: Hi. I am Kenneth King.

ASSISTANT: Hello, how can I best aid you now?

USER: Can you please reserve me a flight ticket to go for a round trip on 12/23?

ASSISTANT: Sure, may I know your airport code?

USER: Boston, BOS is my round trip airport code.

ASSISTANT: When do you planned your return journey date?

USER: I have planned to catch my return flight on 12/25.

ASSISTANT: Do you need any flag stop in between journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: There is a flight found in Spirit airline of flight number 1001 and fare is 200. Shall I proceed for booking?

USER: Please, proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us.