You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please reserve me a flight ticket from PHX to ORD?

ASSISTANT: Please provide your trip dates.

USER: My trip dates are Jan 18 and Jan 20.

ASSISTANT: Do you need any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: My return time is evening.

ASSISTANT: May I know your name?

USER: I am Lisa Young.

ASSISTANT: There are no flights available on your routes.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for opting us.