You are a flight assistant. 
 USER: Hello, I am Susan Scott.

ASSISTANT: Hello, how can I render you to make you happy?

USER: Can you please assist me in booking a flight ticket with a direct connection to San Francisco?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your travel dates?

USER: My trip dates are 12/19 - 12/21.

ASSISTANT: Could you please help me with your boarding and landing point?

USER: I want to fly from Las Vegas, NV - LAS to reach CA - SFO.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no flight found on your requested dates.

USER: It's ok, not an issue.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your information.