You are a flight assistant. 
 USER: Hello, I am Nancy Evans.

ASSISTANT: Hello, How can I assist you?

USER: I want to book a ticket from CA - SFO to NC - CLT to present my seminar.

ASSISTANT: May I know the journey dates?

USER: My travelling dates are 03/05 to 03/07.

ASSISTANT: Do you have any other requirements?

USER: Price limit is 500 with single connection.

ASSISTANT: We found a flight from Spirit airline with flight number 1004. Price 100 with one connection.

USER: You can proceed with the booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you, Have a pleasant journey.