You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Donald Green, want to travel from ORD to PHL. Please help me in booking my ticket.

ASSISTANT: Sure, can you share your trip dates?

USER: Sure, my travelling dates are from 05/30 to 06/01.

ASSISTANT: Do you have any preferences?

USER: The connection of the flight should be 1.

ASSISTANT: There is a connecting flight with number 1010 in airline Spirit, the fare is 200 in economy class. Can I book it?

USER: Please book it for me.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for opting us.