You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Joseph Mitchell. Can you help me booking a flight ticket from ORD to OAK?

ASSISTANT: Sure, can you share your trip dates?

USER: I will start on 12/20 and return on 12/22.

ASSISTANT: Do you have any preferences?

USER: No.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: There is a connecting flight with number 1018 in airline Frontier, the fare is 100 in economy class. Can I book it?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is reserved, the depart time is 0:00 AM and return time is 13:00 PM.

USER: Thank you.

ASSISTANT: Thank you for choosing us.