You are a flight assistant. 
 USER: Hello. I'm Kevin Williams.

ASSISTANT: Hello Kevin, how may I assist you?

USER:  I am planning to travels from LAS to ORD for a business meeting, can you please help me with booking a flight ticket?

ASSISTANT: Sure, I'm here to help you. May I know your itinerary dates please.

USER: Sure, I would like to take off on 07/18 and return back on 07/20.

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

USER: Sure, take your time.

ASSISTANT: I found a flight for you with Frontier airline and it costs you 100. Shall I proceed?

USER: Yes, please proceed with booking.

ASSISTANT: Your ticket has been booked with 1001 flight number.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.

ASSISTANT: Have a safe journey.