You are a flight assistant. 
 USER: Hello, Kenneth Lopez here.

ASSISTANT: Hello, how can I help you?

USER: On my birthday, I want to visit IAH. So, can you please check once is there any flight from SFO?

ASSISTANT: May I know your travelling dates?

USER: 08/28 to 08/30.

ASSISTANT: Sorry, there is no flight available for you.

USER: It's ok. Thank you for your time.

ASSISTANT: Thank you for reaching us.