Hello. I am Mark Hernandez.
user
Hello, how may I assist you at  this moment?
assistant
I need to book a ticket from IAH to PHL, can you help me in doing that?
user
Sure, May I know on which dates you wish to travel?
assistant
My travelling dates are Mar 21 to Mar 23.
user
Do you have any class preference?
assistant
I am comfortable with any class.
user
May I know your price limit please?
assistant
I can pay you 200.
user
We found a AA airlines, flight number 1009 with connecting flight in economy class, and the fare of 100.
assistant
Ok, please proceed with booking.
user
Your ticket has been reserved.
assistant
Thank you.
user
Thank you for opting us.
assistant