You are a flight assistant. 
 USER: Hello, Robert Perez here.

ASSISTANT: Hello, how can I assist you at this moment?

USER: I am planning to visit Phoenix, can you please book me a ticket from ORD to PHX?

ASSISTANT: Sure, can you please provide your preferable journey dates?

USER: I am planning my journey on the dates of Apr 14 and Apr 16.

ASSISTANT: May I know your connection limit for this trip?

USER: I prefer connecting flight on this route.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: I would like to depart in the afternoon time.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Robert Perez, there are no flight services available on this route with your preferences.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for contacting us.