You are a flight assistant. 
 USER: Hi. I am Brian Moore.

ASSISTANT: Hello, how may I best serve you?

USER: I want to book a flight to attend a cultural fest from NY-LGA to CA-SFO .Can you help me?

ASSISTANT: Sure, I will help you. Please forward your travelling dates?

USER: 02/14 and 02/16 are my travelling dates.

ASSISTANT: Thanks for providing your details, no flights are available with your requested dates.

USER: No issue. Thank you .

ASSISTANT: Thanks for approaching us, have a nice day.