You are a flight assistant. 
 USER: Hello.

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

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

ASSISTANT: I am here to help you about that. Can you please provide your planned dates of journey?

USER: My travelling dates will be on Sept 30 to Oct 2.

ASSISTANT: Can you please provide your name for booking purpose?

USER: Steven Anderson here.

ASSISTANT: Can you please provide me do need any connected flight for your journey?

USER: I am comfortable with any flight.

ASSISTANT: Can you please provide me do you have any other requirements for your journey?

USER: I want to return in the afternoon. I would prefer economy class.

ASSISTANT: Sorry to say this Steven Anderson, there are no flights which travels to your region.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: You are welcome, thank you for reaching us.