You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Melissa Edwards.

ASSISTANT: How may I assist you?

USER: I would like to book a flight ticket from AUS to SFO.

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Sure, my travelling dates are Oct 30 and Nov 1.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Melissa Edwards, there are no flights available in your route.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for choosing us.