You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I have to attend dance competition at New York, can you please help me to book a flight ticket from LAS to JFK?

ASSISTANT: OK, may I know your travelling dates?

USER: My travelling dates are Jan 27 and Jan 29.

ASSISTANT: Ok, may I know your name?

USER: My name is Timothy Martin.

ASSISTANT: Do you have any other requirements?

USER: My depart time is afternoon.

ASSISTANT: Do you have any other specifications?

USER: My class preference is economy.

ASSISTANT: The United airlines are providing a flight having a connection limit 0. Can I proceed with the ticket booking?

USER: Ok, please book.

ASSISTANT: Your ticket is confirmed in an economy class and the flight number 1021.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us. Have a happy journey.