You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I assist you?

USER: I am planning to visit Atlanta Botanical Garden with my friend s at ATL, can you help me with booking a economy class?

ASSISTANT: Sure, to book a ticket may I know when you are willing to travel?

USER: I will depart on June 09 and arrival on June 11.

ASSISTANT: Can you please share me your source code?

USER: My takeoff airport code is DFW.

ASSISTANT: Do you have any other requirements?

USER: I need a connecting flight.

ASSISTANT: We found a flight with an airline Southwest of flight 1012 in an economy class with single connection. Shall I proceed with the booking?

USER: Please reserve it.

ASSISTANT: To reserve a ticket may I know your name please?

USER: Thank you. I am Nicholas Lopez.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.