You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I would like to book a ticket from SFO to DFW, can you please help me with that?

ASSISTANT: Sure, we are happy to help you. Please provide your trip dates.

USER: The travel dates are from 04/22 to 04/24.

ASSISTANT: Do you have any other specifications?

USER: I need a flight with 1 connection limit which returns in afternoon time.

ASSISTANT: May I know your good name?

USER: Frank Wright here.

ASSISTANT: Sorry, no flights are available on your journey routes.

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

ASSISTANT: Thank you for choosing us.