You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am Benjamin Harris. I want to book a flight ticket to Charlotte to submit my research record at Charlotte university. Can you help me with booking a flight ticket?

ASSISTANT: Sure, I am here to help you. May I know when you are willing to travel?

USER: I need to travel on 05/21 and return on 05/23.

ASSISTANT: Can you help me with your airport codes?

USER: Sure, ORD is my origin and CLT is my destination.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a connecting flight. 1000 is my fare.

ASSISTANT: We found 1023 Spirit airlines with single connection with price 100. Shall I proceed with the booking?

USER: Please proceed for booking.

ASSISTANT: Your booking had been done successfully.

USER: Thanks for booking my ticket.

ASSISTANT: Thank you for reaching us.