You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: I want to book a ticket from PHX to IAD to attend seminar, can you help me in booking?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: I am departing on Jan 01 and return on Jan 03.

ASSISTANT: Do you have any connection limit preference?

USER: I prefer connecting flight.

ASSISTANT: Do you have any other specifications for this trip?

USER: I want to depart in afternoon time.

ASSISTANT: May I know your good name please?

USER: My name is Janet Nelson.

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

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for contacting us.