You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best can I aid you today?

USER: Can you aid me to book a ticket from SFO to AUS?

ASSISTANT: Can I know your trip dates?

USER: My trip dates are Aug 7 and Aug 9 respectively.

ASSISTANT: Do you need a connecting flight?

USER: I prefer for single connection.

ASSISTANT: Can I know your good name?

USER: Raymond Thompson here.

ASSISTANT: Do you have any other specifications?

USER: My arrival should be in afternoon.

ASSISTANT: Thank you for your details, there are no flights fond with the given details.

USER: Thank you for the help.

ASSISTANT: Thank you.