You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Nancy Miller here. I want to reserve my flight from PHX, to meet my friends who are staying at ORD. Can you please help me with it?

ASSISTANT: May I know your desired travel dates please?

USER: My planned travel dates are Sep 21st and 23rd.

ASSISTANT: May I know your connection limit please?

USER: I need a single connecting flight.

ASSISTANT: Do you have any class preference?

USER: No, I don't have any class preference.

ASSISTANT: There is a flight with connection limit 1 and fare 200, shall I proceed for booking?

USER: Make sure that, my depart time must be in the morning.

ASSISTANT: Sorry to say, there is no flight available.

USER: Ok, not a problem. Thank you for the information.

ASSISTANT: Thank you for opting us.