You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am Ronald Garcia. I need to attend for prayers in Old North Church at Austin, can you please reserve a flight ticket from PHX to AUS?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My journey dates are, depart from Phoenix on Dec 18th and return back on Dec 20th.

ASSISTANT: Do you have any requirements?

USER: I prefer to travel in economy class. I need a halt in between journey.

ASSISTANT: Sorry to say, no flight is available for you.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.