You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I am Williams Thompson, I want to book a flight ticket to Charlotte as I want to visit the Bio fest. Please book me a connecting flight.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 10/12 to 10/14.

ASSISTANT: Help me with the airport codes?

USER: My source code is NV- LAS and Dest code is NC- CLT.

ASSISTANT: We found a flight in an airline Frontier with the number 1020.

USER: Please go with booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.