You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Patricia Green. I am planning to go New York to attend a beauty contest. Please help me in ticket booking from SFO to LGA.

ASSISTANT: Ok, may I know your travelling dates?

USER: My preferred dates are 02/26 and 02/28.

ASSISTANT: Sorry Green, no flights as per your details.

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

ASSISTANT: It's my pleasure. Have a good day.