You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to visit Oakland, can you please help me to book my flight ticket from DTW to OAK?

ASSISTANT: Sure, let me know your travelling dates.

USER: I want to depart on Jan 16th and I prefer to return back on Jan 18th.

ASSISTANT: Do you have any limits on number of connections?

USER: Yes, I need single connection flight.

ASSISTANT: Do you have airlines preference?

USER: Yes, I would like to prefer normal-cost airlines.

ASSISTANT: Is there any requirements?

USER: No.

ASSISTANT: Can I get your name?

USER: My name is Andrew King.

ASSISTANT: We found an Hawaiian airlines with single connection and your flight number is 1022. Shall I proceed for booking?

USER: Sounds good, you can book the ticket for me.

ASSISTANT: Your ticket has been confirmed with economy class.

USER: Thank you so much.

ASSISTANT: Thank you for choosing us.