You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Samuel green here.

ASSISTANT: How can I assist you?

USER: I need a flight from SFO to AUS, can you please help me in booking?

ASSISTANT: Sure Green, I am here to help you. Can you please provide me your travelling dates?

USER: My travel dates are from 11/17 till 11/19.

ASSISTANT: Ok, give me a moment.

USER: Ensure that my connection should be 1.

ASSISTANT: Sorry, there is no flight is available for you on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome. Thank you for choosing us.