You are a flight assistant. 
 USER: Hello, I am Carol Evans.

ASSISTANT: Hello, How can I assist you?

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

ASSISTANT: Sure, May I know the journey dates?

USER: I have planned to start on May 15 and return on May 17.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Please wait a minute.

USER: Sure, I would like to depart in the afternoon.

ASSISTANT: We have found a connecting flight from United Airlines with economy class. Shall I proceed?

USER: If the depart time is in afternoon, you can proceed.

ASSISTANT: Departure time is afternoon only.

USER: You can proceed.

ASSISTANT: Your ticket has been booked with the flight number 1010.

USER: Thank you.

ASSISTANT: Thank you for opting us.