You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you help me to book a flight ticket for the dates Sept 14th and Sept 16th respectively?

ASSISTANT: Yes, can you tell me your nearest airport codes?

USER: Ok, please book a ticket from my origin airport PHX to Las Vegas, LAS.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a connecting flight.

ASSISTANT: I have found an economy class ticket with a price of 200 and 1 connection.

USER: Ok, please go ahead with the booking.

ASSISTANT: Can I know your name for booking?

USER: My name is Sharon Baker.

ASSISTANT: Your ticket has been booked.

USER: Ok, thank you for assisting me.

ASSISTANT: Thank you for contacting us.