You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be at your service today?

USER: Please book a ticket from Houston, IAH to Detroit, DTW with a direct flight.

ASSISTANT: Sure, may I know your journey dates?

USER: My journey dates are 12/20 and 12/22.

ASSISTANT: Ok, can I have your name please?

USER: My name is Sharon Johnson.

ASSISTANT: Ok, please hold on for a moment.

USER: Sure.

ASSISTANT: Thank you for being on hold, we found Spirit airline with price 100 from flight number 1019. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your booking has been done in economy class.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.