You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Virginia Hall here. I want to visit SFO - San Francisco for a painting contest, can you book a flight from LAS?

ASSISTANT: Sure, do you have any specifications?

USER: Yes, please check for the flight with 1 connection.

ASSISTANT: Can you provide the trip dates?

USER: My travelling dates for this journey will be from 05/09 to 05/11.

ASSISTANT: May I know your flying and landing airport codes? Give me a minute.

USER: My airport codes will be from LAS - SFO. Ok.

ASSISTANT: Sorry, there is no flight found on your given dates.

USER: Ok, than you for checking with availability.

ASSISTANT: Thank you for reaching us.

USER: You are most welcome.