You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Andrew Young. I would like to book a ticket from AUS to PHL, can you please help me out?

ASSISTANT: Sure, can I know the travel dates please?

USER: I am travelling on these dates June 23rd and 25th.

ASSISTANT: May I know the depart and return time please?

USER: I prefer departure time in the morning.

ASSISTANT: Can I know the connection limit please?

USER: I need a single connected flight.

ASSISTANT: Do you have any requirements?

USER: I don't have any requirements.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for approaching us.