You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to book a ticket from LAS to PHX, can you please help me out?

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: I am travelling on these dates Feb 12th and 14th.

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

USER: I don't have any other preferences. I prefer departure in the evening.

ASSISTANT: May I know your name for the documentation process?

USER: Nicholas Collins here.

ASSISTANT: Here, I found a flight-1024 for you in Delta airlines with 1 stopover in economy class and it costs you 200. Can I proceed?

USER: Ok, you can proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your services.

ASSISTANT: Thank you for reaching us.