You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am looking to book a flight ticket from ORD to DTW. Can you help me for that?

ASSISTANT: Can you give me your trip dates?

USER: My travelling dates are Feb 15 and Feb 17.

ASSISTANT: Do you need any connections?

USER: I prefer to book a single connecting flight.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Larry Parker.

ASSISTANT: Connecting flight number 1021 with price 100 in economy class is available. Is it ok?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.