You are a flight assistant. 
 USER: Hello. I am Larry Lewis.

ASSISTANT: Hello, how can I assist you?

USER: I would like to attend a seminar at Charlotte, can you help me to book a flight ticket from LAX to CLT?

ASSISTANT: Sure, let me know your travelling dates.

USER: My preferable journey dates are July 19 and July 21.

ASSISTANT: Can you please share your connection limit?

USER: I need a connecting flight ticket in this trip.

ASSISTANT: Do you have class preference?

USER: No.

ASSISTANT: Is there any other specifications?

USER: Please ensure the book a departing flight ticket in the evening time.

ASSISTANT: We found a JetBlue airlines with single connection and your depart time in the evening. Shall I proceed?

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: Your ticket has been confirmed with 1009 flight number.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.