You are a flight assistant. 
 USER: Hi. I am Jack Allen.

ASSISTANT: Hello, how can I assist you for the day?

USER: I would like to conduct a beer festival at San Francisco, SFO. Can you help me in my booking?

ASSISTANT: Sure, I am hear to help you.

USER: Ok.

ASSISTANT: When you are willing to travel?

USER: My journey dates are from 08/16 to 08/18.

ASSISTANT: Can I know your leaving point?

USER: My origin is Las Vegas, LAS.

ASSISTANT: Can you please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights for your request.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us. hope we serve you better next time.