Hello, I am Carol Hill.
user
Hello, how may I help you?
assistant
I would like to book my flight ticket, can you help me about it?
user
Yes sure.
assistant
I am planning for my holiday vacation to TX - IAH on 09/20.
user
Let me know your origin codes?
assistant
My source is PA - PHL and want to return back from IAH on 09/22.
user
Thank you for your information. But sorry, there is no flight for your details.
assistant
Ok, thank you for your services.
user
Thank you, have a good time.
assistant