Hello, I am Richard Hall.
user
Hello. How can I help you?
assistant
I would like to go to Houston Zoo in Houston, so could you please book a ticket for me?
user
Sure, I will help you. Can you please provide me your travelling dates?
assistant
I would like to go on 12/07 and return back on 12/09.
user
Ok, may I know your airport codes?
assistant
My source and destination airport codes are IAH and HOU.
user
Ok, give me a moment. Sorry, there is no flights are available on your route.
assistant
Ok, thank you for checking.
user
Welcome.
assistant