You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Kathleen Lewis.

ASSISTANT: Lewis, how may I assist you today?

USER: I am looking to book a flight ticket to meet my friend in Las Vegas. Can you help me for booking a flight ticket?

ASSISTANT: Sure, I am here to help you. May I know your travelling dates please?

USER: My travelling dates are 05/24 and 05/26.

ASSISTANT: Sure, may I know your airport codes please?

USER: My travelling airport codes are from IAD to LAS.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure, I will wait for your response.

ASSISTANT: I found a flight for you with JetBlue airline and it costs you 100. Shall I proceed to reserve a seat in this particular airline?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been booked with 1008 flight number.

USER: Thank you for booking.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.

USER: Welcome.