Hi, I am Larry Campbell.
user
Hello, how may I assist you?
assistant
I have an appointment with Barack Obama so that I want to fly to CA-SFO on 12/22 from PA-PHL. I intend to return on 12/24, can you help me to book a flight ticket?
user
Sure, I will check the availability of flights and revert you in a moment.
assistant
Sure.
user
We are glad to say, there is an airline Delta with airline number 1003. Price is 100 with one connection. Shall I proceed your booking?
assistant
Yes, you can.
user
Ok, your ticket for Delta airline has been reserved.
assistant
Thanks for your service.
user
Thank you for connecting us, have a good day.
assistant