You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to attend a Seminar in Phoenix. Can you please help me for booking the flight ticket?

ASSISTANT: Can you please tell me your travelling dates?

USER: My travelling dates are Dec 30 and Jan 01.

ASSISTANT: Please let me know your connection limit?

USER: I prefer single connecting flight.

ASSISTANT: May I know your travelling airport codes please?

USER: My airport codes are ORD and PHX. I want to depart in afternoon and return in morning.

ASSISTANT: May I know your name please?

USER: Donna Gonzalez.

ASSISTANT: Sorry, no flights available on your route.

USER: Anyway, thanks for the information.

ASSISTANT: Most welcome.