Hi.
user
Hello.
assistant
My name is Donald White.
user
Do you want me to help you with anything?
assistant
 I am planning to visit Denver zoo, could you book a ticket from ORD to DEN?
user
Sure, may I know your preferable dates please?
assistant
The travel dates are from 01/14 to 01/16.
user
Ok, please give me a minute so that I can check the availability of flights for you.
assistant
Ok fine.
user
I am sorry to infirm that there is no flight found.
assistant
That's ok, thank you for your information.
user
Thank you for contacting us. Have a nice day.
assistant