You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you for today?

USER: Can you book a ticket for me?

ASSISTANT: Sure, may I know your name for further processing?

USER: Raymond hill.

ASSISTANT: Ok Raymond, could you please provide your source and destination details?

USER: I would like to travel from NY - EWR to NV - LAS.

ASSISTANT: Ok, can you mention your journey dates?

USER: The departure is on 12/20 and return is on 12/22.

ASSISTANT: Ok, wait a moment I'll check the available flights.

USER: OK.

ASSISTANT: Thanks for waiting, found a flight on your dates with airline Spirit and number 1015 having 1 connection and price is 200. Shall I proceed with your booking?

USER: Yes. Please proceed. Thank you for helping me out.

ASSISTANT: Ok Raymond, your booking is done. Have a great journey!.

USER: Thank you.