Hi.
user
Hello. How may I help you out?
assistant
I am Paul Phillips want to visit Houston, can you book a ticket from DEN to HOU?
user
Sure, I will help you in booking the ticket. May I know your travelling dates please?
assistant
Sure, my travelling dates will be 12/02 and 12/04.
user
Can I know your price limit?
assistant
My flight price should be within 200.
user
Sorry, there are no flights found in our database.
assistant
That's ok, thank you.
user
Thank you for reaching us.
assistant