You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket to attend national conference for smart city program?

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates are from 06/28 to 06/30.

ASSISTANT: Can I know your airport codes?

USER: My leaving point is from New York, NY - LGA to Chicago, IL - ORD.

ASSISTANT: Thanks for your details. We found 1021 Spirit airline with single connection and price of 100. Shall I proceed with booking?

USER: You can proceed with the booking.

ASSISTANT: To proceed we need your name?

USER: I am Catherine Turner.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for reaching us.