You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, What can I do for you?

USER: I am Jessica Hernandez. I need to meet my grandparents one in a month in Oakland, OAK. Will you help me out in booking my flight ticket from New York, LGA?

ASSISTANT: Sure, Please help me with your trip dates.

USER: I will fly on 05/25 and recur on 05/27.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates. Thank you for availing us.

USER: Ok. Thank you for quick response.