You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mark Phillips.

ASSISTANT: How can I assist you?

USER: I want to attend an event in Las Vegas.Can you help me in booking a ticket?

ASSISTANT: Sure, I will help you in  booking. Can you please provide me your travelling dates?

USER: I would like to travel on 10/07 and 10/09.

ASSISTANT: Ok, may I know your airport codes?

USER: I want to travel from LAS to LAS.

ASSISTANT: Ok, give me a moment, I will check your flight availability. Yes, I found a flight for you with 1 connection. Shall I proceed for booking?

USER: Yes, please proceed to booking.

ASSISTANT: Your ticket is booked with flight number 1004. Thank you for choosing us.

USER: Thank you for helping me out.

ASSISTANT: Welcome.