You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Benjamin Harris. I want to book a ticket with the fare of 500 to meet my friends, can you please help me that?

ASSISTANT: Sure. Can you please let me know your travelling dates?

USER: My travelling dates are on 11/27 and 11/29.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: It is a round trip from CLT.

ASSISTANT: We found a SouthWest airline, flight number:1002 and the price is 100.

USER: Ok, please book this ticket.

ASSISTANT: Can I reserve it?

USER: Ok.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.