You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Gary Thomas. I am planning to attend music concert at LAS, can you please help me with booking a flight ticket from SFO?

ASSISTANT: Please share your desired travel dates.

USER: Sure, I would like to take off on Feb 24 and return on Feb 26.

ASSISTANT: May I know your connection limit please?

USER: Yes, I need a direct flight.

ASSISTANT: Please wait a while.

USER: Sure, take your time.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.