You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Charles Gonzalez, I would like to go from AUS to PHL, can you please book me a ticket?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are from 08/23 to 08/25.

ASSISTANT: Do you have any other specifications?

USER: Yes, I have one connection limit with the price of 500.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there is no flights found on your details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for choosing us.