Hello.
Hello, how can I oblige you?
 As I am a scientist, I want to attend science festival with my students at Houston. Can you do the reservation?
Sure, Kindly mention your journey airport codes.
My airport codes are ATL-IAH.
Ok, when do you want to travel?
My trip dates are 07/14 and 07/16.
Ok, May I know your name?
James Phillips here.
Ok, please wait for a moment.
Sure.
Thank you for your patience, we did not find any flights with your given requirements.
No problem, Thanks for the information.
Thank you for choosing us.