You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to visit Botanical Gardens at Denver, please help me in booking a ticket.

ASSISTANT: Ok, I will assist. May I know your travel dates?

USER: My travelling dates are 08/11 and 08/13.

ASSISTANT: Please can I know the airport codes? Please let me know your name to book.

USER: My airport codes are HOU and DEN. My name is Alexander Lewis.

ASSISTANT: Ok, there is direct flight available. Can I book?

USER: Please check the flight with 1 connection.

ASSISTANT: Sorry, there is no connecting flights. Thank you for connecting with our agency.

USER: Thank you for your information.