You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a flight ticket from IAD to LAS to attend a conference meeting?

ASSISTANT: Sure, may I know your travel dates?

USER: My preferable travel dates are Mar, 3 and Mar, 5.

ASSISTANT: Do you prefer connecting flight or direct flight?

USER: I need a connecting flight.

ASSISTANT: Do you like any other specifications?

USER: I prefer to economy class.

ASSISTANT: Please send me your name.

USER: Kathleen Collins.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: We found a flight on your details with Frontier Airlines, flight number: 1001.

USER: Please proceed.

ASSISTANT: Ok. Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.