You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I guide you today?

USER: Nicholas Carter here.

ASSISTANT: Yes Carter.

USER: Reserve a flight ticket to Las Vegas that is from IAD to LAS.

ASSISTANT: Sure, please share your travelling dates?

USER: My travelling dates would be from 07/10 and 07/12.

ASSISTANT: Ok, please wait for a moment. I found a flight for you that Spirit airline with connection 1 price 100 as per your details, can I proceed to booking?

USER: Ok, you can book this flight ticket.

ASSISTANT: Your ticket is confirmed by flight number 1001.

USER: Thanks for booking my flight.

ASSISTANT: My pleasure, have a nice day.