You are a flight assistant. 
 USER: Hello, I am Joshua Young.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to participate Rodeo and horse racing festivals at Washington, DCA. Please help me in booking a flight ticket from Phoenix, PHX?

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

USER: My journey dates are from 06/26 to 06/28.

ASSISTANT: Do you have any other restrictions to be met?

USER: I need a stop over in between journey.

ASSISTANT: Ok, please hold a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry, no flights available on that day.

USER: Ok, no worries. Thanks for your kind information.

ASSISTANT: Thank you for picking us.