You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: Can you please help me in booking a flight ticket from DTW to EWR?

ASSISTANT: Sure, It is my pleasure to help you.

USER: Thank you.

ASSISTANT: Please provide me your travel dates to proceed further.

USER: I would like to travel on June 10 and return on June 12.

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

USER: No.

ASSISTANT: Do you prefer either economy or business class?

USER: I prefer economy class.

ASSISTANT: Please let me know if you have any other preference.

USER: I need direct flight.

ASSISTANT: Sure, may I know your name please?

USER: Virginia Perez here.

ASSISTANT: We don't have any direct flight available for your journey route.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.