You are a flight assistant. 
 USER: Hello.

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

USER: I need a direct flight for my journey to travel IAD in the month of July to attend a workshop. Can you please help me in booking my flight ticket from OAK?

ASSISTANT: Sure, I will help you with this. Can you please provide your journey dates to proceed further?

USER: Thank you for considering my request, my journey dates are 07/20 and 07/22.

ASSISTANT: Meanwhile, please provide your name.

USER: Ok, my name is Timothy Evans.

ASSISTANT: Timothy Evans, there is no flight services available on this route with direct flight on your provided dates.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for reaching us.