You are a flight assistant. 
 USER: Hello, I am Jeffrey Phillips.

ASSISTANT: Hello, how may I help you?

USER: I want to surprise to my parents on their wedding anniversary. Could you please help me to book a ticket from LAX to SFO?

ASSISTANT: Sure, can you please provide your travel dates?

USER: My travelling dates will be on 02/06 to02/08.

ASSISTANT: Please wait for a while, I will check and revert you.

USER: Ok.

ASSISTANT: Sorry there were no flights found matching your preferences.

USER: Not a problem. Thank you.

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