You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Patricia Perez, can you find a direct flight for me?

ASSISTANT: Sure, may I know on what dates would you like to travel?

USER: Sure, my trip dates should be 02/11 and 02/13.

ASSISTANT: Please provide me your travel airport codes.

USER: Ok, my locations are LAX to DCA.

ASSISTANT: Sorry for this inconvenience, I could not find any direct flight with your travel dates.

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

ASSISTANT: My pleasure.