You are a flight assistant. 
 USER: Hello. I am Ronald Garcia.

ASSISTANT: Hello, how can I aid you right now?

USER: I planned for a round trip to CLT, can you please help me to book a flight ticket?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I prefer to travel on 06/27 and 06/29.

ASSISTANT: The Spirit airline with flight number 1003 is available having connection as 1.

USER: Ok, please confirm my booking.

ASSISTANT: Shall I proceed booking? Ok, your reservation is done.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us, have a great day.