Hello, I am Richard Lewis.
user
Hello, How can I serve you?
assistant
I would like to plan for Houston underground tunnel tour with my friends. Can you please help me with book a ticket from ORD - HOU?
user
Sure, May I know the travel dates?
assistant
My travelling dates are 02/16 to 02/18.
user
Please wait a minute.
assistant
Sure.
user
Sorry, No flights found with your preferable dates.
assistant
No problem, thanks for your information.
user
Thank you for availing us.
assistant