Hello, Robert Martinez here.
user
Hello Mr. Martinez.  How can I help you today?
assistant
I am planning to visit Heritage Square in Phoenix, could you book a ticket for me from IAH to PHX?
user
Sure thing.  When do you plan on making this trip.
assistant
I am travelling on 05/08 and 05/10.
user
Looks like there's a fairly empty flight operated by American.  The seat is in economy and the total would be 100.
assistant
Please book my ticket.
user
Your flights been booked.  Please contact us if you have any questions.
assistant
Thank you for assisting me.
user
Your welcome.  Have a nice day.
assistant