You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Gregory Robinson.

ASSISTANT: Gregory Robinson, how can I aid you today?

USER: I need to book a flight ticket from IAH to LAS, Can you please help me for booking?

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

USER: I would like to travel on 10/25 to return on 10/27.

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

USER: Sure.

ASSISTANT: I found a flight for you with American Airlines and it cost you 100. Shall I proceed to reserve a seat in this single connecting flight.

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been booked with 1003 flight number.

USER: Thanks for your information.

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