You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Stephanie Moore, can you find a flight for me from DCA to HOU?

ASSISTANT: Sure, please provide me your travel dates.

USER: Sure, my journey dates are from 02/28 and 03/01.

ASSISTANT: Sorry, I could not find any flight with your travel dates.

USER: It's ok, thanks for your information.

ASSISTANT: My pleasure.