Hello.
user
Hello, how can I assist you now?
assistant
I would like to book a ticket from PHL to DFW, can you please help me out?
user
Sure, I am happy to help you with that. Can I have your travel dates please?
assistant
I am travelling on these dates April 21st and 23rd.
user
Ok, please let me know your good name.
assistant
Gregory Mitchell here.
user
Ok, please let me know your preferable timings of your journey.
assistant
I prefer departure in the evening and return in the evening.
user
Do you have any other specifications?
assistant
I need single connected flight.
user
Sorry to inform you that no flight is available to you on your planned dates.
assistant
Ok no problem, thank you for your services.
user
Thank you  for choosing us.
assistant