You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you help me to book a flight ticket in my preferable travel dates Feb, 17 and Feb, 19?

ASSISTANT: Sure, could you please provide your travelling airport codes to search for the flight?

USER: CLT and BOS are my airport codes.

ASSISTANT: Do you have any connection limit?

USER: I would prefer connecting flight.

ASSISTANT: Can I know your name?

USER: Paul Rodriguez.

ASSISTANT: Do you have any requirements?

USER: No, thank you.

ASSISTANT: There is a connecting flight 1021 of United Airlines, can I proceed?

USER: Please proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Welcome.