You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you please book a flight ticket from DTW to ATL?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are Jan 23 and Jan 25.

ASSISTANT: Which class do you prefer to travel?

USER: I am comfortable with any class.

ASSISTANT: Is there any specific airline are you looking for?

USER: I am looking for normal cost airline.

ASSISTANT: Do you have any other preference?

USER: I need a connecting flight.

ASSISTANT: May I know your name please?

USER: Ok, my name is Jennifer Lopez.

ASSISTANT: We have a direct flight from United airlines, number 1004 and it is costing 200 to you. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Your ticket is reserved in economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.