Hi, I am Jack Adams.
Hello, How could I serve you today?
I need to book a ticket to Detroit from Philadelphia on 06/30.
Sure, Can I know your airport abbreviates and arrival date of your journey?
Sure, My airport abbreviates are PHL-DTW and returning on 07/02 to  Philadelphia.
Can you please wait for few minutes I will confirm the details.
OK.
Thank you for your patience. Sorry to inform there is no flight found based on your essential criterion.
OK, Thank you for your information.
Thank you for contacting us. Have a great day.