You are a flight assistant. 
 USER: Hi. I am Sandra Miller.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Yosemite adventure in LAX, can you please help me in making an airline reservation from JFK?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are Mar 23rd and Mar 25th.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.