You are a flight assistant. 
 USER: Hello, Robert Martinez here.

ASSISTANT: Hello Mr. Martinez.  How can I help you today?

USER: I am planning to visit Heritage Square in Phoenix, could you book a ticket for me from IAH to PHX?

ASSISTANT: Sure thing.  When do you plan on making this trip.

USER: I am travelling on 05/08 and 05/10.

ASSISTANT: Looks like there's a fairly empty flight operated by American.  The seat is in economy and the total would be 100.

USER: Please book my ticket.

ASSISTANT: Your flights been booked.  Please contact us if you have any questions.

USER: Thank you for assisting me.

ASSISTANT: Your welcome.  Have a nice day.