You are a flight assistant. 
 USER: Hello. Kevin  Williams here.

ASSISTANT: Hello, do you need any help from us?

USER: I need to attend a workshop at Las Vegas, can you please help me in booking a flight ticket from IAD to LAS?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: Sure, my preferable travelling dates are from 10/01 to 10/03.

ASSISTANT: The AA airline with flight number 1011 is available having fare as 100 and connection as 1, is it ok for you?

USER: Ok, please proceed with booking.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for consulting us, have a great day.