Hi.
Hello, how can  help you today?
Can you please book a flight ticket from SFO to PHL?
Sure, can you please share your journey dates that you prefer to travel?
My travelling dates are May 23 and May 25.
Do you require any stopovers in your journey?
No, I am comfortable with any flight.
  Would you let us know if you have any other preferences?
I don't have any other specifications.
Please share your name.
My name is William Thomas.
There is a flight with your requirement, airline is United Airlines with price 100 and single connection. Shall I proceed with booking?
Yes, please.
Your booking is done and flight number is 1015 in economy class.
Thank you for the help.
Thanks for reaching us.