Hello.
user
Hello. How may I assist you at this moment?
assistant
I'm Robert Johnson. Can you book a ticket from IAH to PHX? As I'm planning to visit Phoenix.
user
Sure, I will help you with that. Can you please provide your preferable dates of travelling?
assistant
Sure, my planned departure and return travel dates are 23rd and 25th of December.
user
Is there any additional requirements do you want?
assistant
Yes, I prefer normal-cost airline preference.
user
Please hold on a moment to check the flights on your route.
assistant
Sure, ensure that my return time should be afternoon.
user
We regret to inform you that, there are no flights moving to locations with your requested dates of travelling.
assistant
Oh! That's ok, thank you for giving the information.
user
Thank you for reaching to our services.
assistant