Hi, I am Nancy Nelson.
user
Hello, how can I assist you today?
assistant
I want to book a flight ticket from Oakland to Las Vegas, so can you please help me in booking a direct flight?
user
Sure, may I know your source and destination airport codes?
assistant
 Yes, my airport codes are CA-OAK and NV-LAS.
user
How much you can afford for ticket fare?
assistant
I can afford up to 500.
user
Ok, On which dates would you like me to book a flight ticket for you?
assistant
My travel dates are 07/31 and 08/02.
user
Please wait for a minute, let me search a flight for you.
assistant
Ok.
user
Unfortunately, no flights were running from your requested source point due to bad weather conditions.
assistant
            That's ok, thank you for the information.
user
Thank you for contacting us.
assistant