You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Betty Lewis. Can you book a flight ticket from PHL to DEN?

ASSISTANT: Sure, can you share your trip dates?

USER: Feb, 27 and Feb, 29 are my preferable travel dates.

ASSISTANT: Do you have any preferences?

USER: I want to travel in economy class and my depart time should be at afternoon.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Do you prefer a connecting or direct flight?

USER: I need a connecting flight.

ASSISTANT: There is a connecting flight with number 1012 in airline Delta, the fare is 200 in economy class. Can I book it?

USER: Please proceed.

ASSISTANT: Your ticket is reserved, the depart time is 12:00 PM and return time is 21:00 PM.

USER: Thank you.

ASSISTANT: Thank you for reaching us.