Hi.
user
Hello. How may I help you?
assistant
I am Patricia Johnson want to visit Las Vegas, can you help me to book a direct flight?
user
Sure, tell me your travel dates please?
assistant
Sure, my travelling dates will be 01/08 and 01/10.
user
Ok, now please tell me your airport codes?
assistant
Yes, I want to fly from DEN to LAS.
user
Thanks for your time and patience. But I am sorry to say that presently there are no flights available.
assistant
That's ok, thank you.
user
Thank you.
assistant