You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Laura Green.

ASSISTANT: How can I assist you today?

USER: Can you find a flight ticket from the airport LAS to IAD?

ASSISTANT: Sure, will you mention the travelling dates please?

USER: Ok, my preferable travel dates are 04/15 and 04/17.

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

ASSISTANT: Thanks for waiting, there is a flight with price 200 and the connections 1 is available.

USER: That's perfect, you can proceed to book the flight ticket.

ASSISTANT: Your ticket is booked. The flight number is 1011 and the airline is Delta.

USER: Thank you for your service.

ASSISTANT: Welcome, have a great day.