Hello. I am Jason Taylor here.
user
Hello. How may I assist you today?
assistant
I am planning to visit a trip at DFW. Can you please help me with booking a flight ticket from OAK?
user
May I know your travelling dates?
assistant
My travel dates are Dec 11 and Dec 13.
user
Do you need any specifications for this reservation?
assistant
I need a direct flight  in my journey and my return time should be in Evening.
user
Please wait a moment.
assistant
Sure, I will wait for your response.
user
Sorry, there are no flight tickets available on your journey dates.
assistant
Not a problem, thank you for the information.
user
Thank you for reaching our service.
assistant