You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a flight ticket to Oakland CA-OAK, help me in booking my flight ticket from Detroit MI-DTW.

ASSISTANT: Sure, we are happy to help you.

USER: Thank you.

ASSISTANT: May I know how much do you want to spend on flight ticket?

USER: I can spend up to 1000.

ASSISTANT: May I know when you have planned to travel?

USER: I have planned to travel from 10/11 to 10/13.

ASSISTANT: Do you have any class preferences?

USER: I need economy class flight.

ASSISTANT: On what name, do I need to reserve your ticket?

USER: Please reserve my flight ticket with the name Jack Roberts.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: We found a flight 1023 from Spirit airline having a halt and fare is 100. Shall I confirm your booking with this flight?

USER: Please proceed.

ASSISTANT: Your booking has been confirmed with an economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing our airlines.