You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Daniel Parker. I am planning to a trip with my friends. Can you book a flight ticket in my preferable dates Apr, 11 and Apr, 13?

ASSISTANT: Sure, can you please share your airport codes as well?

USER: Sure, my airport codes are IAD and MSP.

ASSISTANT: Do you need a stop over?

USER: Yes, I need a stop over.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: There is an Spirit airline with flight number 1007 going on your way and the fare is 100. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your booking has been confirmed successfully.

USER: Thank you for the help.

ASSISTANT: Thank you for picking us.