Hello. I am Rachel Hall.
user
Hello, how may I serve you?
assistant
I need a direct flight from Philadelphia, to celebrate the traditional festival with my parents in Las Vegas. Would you please aid me in booking a flight ticket?
user
Sure, may I know your travel dates?
assistant
My travel dates are 01/27 and 01/29.
user
Help me with the airport abbreviates?
assistant
My airport codes are from PA-PHL to NV-LAS.
user
We do not found any flights running in your specified routes.
assistant
Ok, no problem at all. Thank you for your service.
user
Thank you for reaching us.
assistant