You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am a Botanist want to visit Atlanta Botanical Garden at Atlanta,GA-ATL. Can you book a ticket with name Stephen Martin?

ASSISTANT: Sure, I can help you. Can I know your travelling dates?

USER: My travelling dates are 12/10 and 112/12.

ASSISTANT: Where would you like to start from?

USER: My return date is 12/12.

ASSISTANT: Give me a minute.

USER:  I will depart from CO-DEN. OK.

ASSISTANT: Thanks for your time. Unfortunately, there  no flights found according to your requriments.

USER: Ok, thank you for your response.

ASSISTANT: Thank you for reaching us.