You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Anthony Carter. I want to visit Empire State Building in New York. Can you book a flight ticket for me?

ASSISTANT: Sure, can I know your travel dates?

USER: Sure, I want to depart on 10/19 and return date is 10/21.

ASSISTANT: Please let me know your airport codes.

USER: Ok, my source airport code is PHL and destination airport code is EWR.

ASSISTANT: Do you have any connection limit?

USER: Yes, I will be happy if there is a single connecting flight.

ASSISTANT: The flight 1005 of Frontier airlines is available on your requested dates. Shall I proceed?

USER: Yes, please book the flight ticket.

ASSISTANT: Carter, your ticket is booked successfully.

USER: Thank you for your quick assistance.

ASSISTANT: You are welcome.