You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Please help me to book a flight ticket from ORD to PHX.

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are from May, 18 to May, 20.

ASSISTANT: Please let me know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other preference?

USER: No.

ASSISTANT: Here is a connecting flight with flight number 1013 and fare is 200, providing ticket in economy class. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Can I know your name please?

USER: Robert Hill.

ASSISTANT: Your ticket is confirmed in Delta Airline.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.