You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you help me to book a flight ticket from AUS to PHL?

ASSISTANT: When you are willing to travel?

USER: My travel dates for the journey are Nov 13th and Nov 15th.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: Yes, I need a business class flight and the departure time should be during morning.

ASSISTANT: May, I know your good name?

USER: My name is Stephen Hill.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us.