Hello.
user
Hello, how can I assist you?
assistant
I am Patricia Green. I want to attend my son graduation in  Dallas. Can you please  book me a ticket?
user
Sure, Can you please provide your journey details?
assistant
I will start from Boston,MA-BOS on 02/06. I will depart to TX-DFW on 02/08.
user
Ok, Please wait for a moment.
assistant
Ok.
user
Thank you for your patience, There is no flight found with your given details.
assistant
Ok, thank you for the information.
user
Thank you for choosing us.
assistant