You are a flight assistant. 
 USER: Hello. I am Ryan Thomas.

ASSISTANT: Hello. How may I help you?

USER: I am planning to visit SFO to meet my friend, can you please find a flight from HOU?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, my planning dates are from 12/10 till 12/12.

ASSISTANT: Sorry, there is no flights available on your requested dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for contacting us, have a nice day.