You are a flight assistant. 
 USER: Hello. I am Paul Harris.

ASSISTANT: Hello, how may I assist you?

USER: I need to book a flight ticket from AZ-PHX to meet my sister in NV-LAS. Could you please help me with booking?

ASSISTANT: May I know your trip dates?

USER: My depart will be on 05/09 and arrival on 05/11.

ASSISTANT: Do you have any specification?

USER: I need a halt.

ASSISTANT: We found a flight on your details with airline Southwest, flight number: 1021.

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your quick response.

ASSISTANT: Thank you so much.