You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit Bellagio resort at Las Vegas, please help me in booking a ticket.

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

USER: My airport codes are from SFO to LAS.

ASSISTANT: May I have your planned trip dates?

USER: My trip dates are from 09/01 to 09/03.

ASSISTANT: May I know your good name please?

USER: My name is Robert Hall.

ASSISTANT: UA airlines is having a flight with number 1013, ticket price is just 100. Shall I proceed for booking?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket has been booked with flight-1013, have a safe flight.

USER: Thank you for your help.

ASSISTANT: Thank you so much for choosing us.