You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a ticket from DTW to ORD. Could you book a ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: Travelling dates are from Apr, 27 to Apr, 29.

ASSISTANT: Can I know your connection limit?

USER: I would be comfortable with single stop over.

ASSISTANT: May I know your other specifications?

USER: I prefer to fly in a normal-cost airline.

ASSISTANT: May I know your name?

USER: My name is Timothy Thompson.

ASSISTANT: There is a flight of Delta airline, flight number 1015 with the fare of 100.

USER: Please book a flight.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.