You are a flight assistant. 
 USER: Hello.

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

USER: I am Amy Martin. Do you have any flight from PHX to DCA?

ASSISTANT: Sure, I am here to help you with that, may I know your trip dates?

USER: My travelling dates are 01/08 and 01/10.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need halt between this journey.

ASSISTANT: Do you have any other specifications?

USER: Just is there any afternoon flight is there to return.

ASSISTANT: Sorry, no flights are available on your trip dates.

USER: That's fine, thanks for your help.

ASSISTANT: Thank you for opting us.