Hello,.
user
Hello, How can I assist you?
assistant
I am  Samuel Jackson. I would like to visit Oasis Water Park in Phoenix, PHX. Can you please book a flight ticket from LAS?
user
Sure, Please help me with your travel dates.
assistant
My journey dates are, start on 12/20 and return back on 12/22.
user
Please wait a minute.
assistant
Sure.
user
Sorry, No flights found with your preferable dates.
assistant
Ok, no problem. Thank you for your information.
user
Thank you for choosing us.
assistant