You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Myself David Mitchell. I need to travel San Francisco, can you please reserve flight from AUS and SFO?

ASSISTANT: Sure, we are here to assist you for booking. Kindly please share your connection limit.

USER: I need one connecting flight.

ASSISTANT: Ok, let me know your class preference.

USER: I am looking for a business class flight ticket.

ASSISTANT: Sure, Can you please provide your preferable journey dates?

USER: My travelling dates are Jan,16 and Jan,18.

ASSISTANT: Sure, Is there any airline preference?

USER: I have already mentioned above.

ASSISTANT: Ok, please wait for a moment.

USER: Please take your time.

ASSISTANT: Thanks for your time. Sorry for the inconvenience, there were no flights running at that location due to abnormal weather conditions.

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

ASSISTANT: Thank you for reaching us.