You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Samuel Miller from Las Vegas and I want to visit New York to meet my boss. Can you please help me?

ASSISTANT: May I know your desired travel dates please?

USER: My travel dates are 03/09 and 03/11.

ASSISTANT: Can I know your preferred airport codes please?

USER: Sure, my airport codes are LAS and EWR.

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

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for opting us.