You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I'm planning to visit Denver botanical gardens, can you please book the ticket from PHL to DEN?

ASSISTANT: Sure, I am happy to help you. Can I have your travelling dates?

USER: Sure, my planned departure and return travel dates are 29th Nov and 1st Dec.

ASSISTANT: Is there any connection limit for you?

USER: I prefer single connected flight to travel.

ASSISTANT: Do you have any other specifications to be met?

USER: No, I don't have any other specifications.

ASSISTANT: May I know your good name?

USER: My name is Amanda Jones.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for choosing us.