Hello,.
user
Hello,. How can I amend you today?
assistant
I am John Hernandez. I would you like to meet my grand parents on 12/02 and return on 12/04. Could you please help me with booking a flight ticket?
user
Ok. Sure, we are mirthful to aid you. What is the budget for your ticket?
assistant
Sure, I can pay up to 1000.
user
What are the airport codes your willing to travel?
assistant
Sure, TX-HOU is my source airport code and PA-PHL is my destination airport code.
user
Please, wait for a moment I will check the flights and revert  to you.
assistant
Sure.
user
Thanks for your time. There is no flight found to your route based on your request.
assistant
No problem, thank you for the information.
user
Thank you for availing us.
assistant