You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I have to attend a Live Concert at Atlanta, could you please help me with booking a flight ticket from ORD to ATL?

ASSISTANT: Sure, please provide me your planned travel dates.

USER: I would like to depart on Dec 13th and return on Dec 15th.

ASSISTANT: Do you prefer either economy or business class?

USER: I am comfortable with any class.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: I have no preferences except connecting flight.

ASSISTANT: May I know your name to proceed further?

USER: I am Eric Lee.

ASSISTANT: We have a flight from Southwest airlines, number 1013 with a connection ans the fare is 100. Shall I proceed with the booking?

USER: Please confirm the booking.

ASSISTANT: Your ticket is confirmed in economy class.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for reaching us.