You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Karen Williams, can you find a flight?

ASSISTANT: Sure Karen, let me know your journey details.

USER: I am planning to meet my family at HOU from ATL. My travelling dates are 04/10 and 04/12.

ASSISTANT: Sorry for the inconvenience, there is no flight for you with your provided details.

USER: Oh! that's fine. Thank you for your help.

ASSISTANT: Thank you for reaching us.