You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: I am Shirley Lopez. Can you please help me in booking my flight ticket from PHL to LGA?

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

USER: My travelling dates are July 13 and July 15.

ASSISTANT: Please wait a minute.

USER: Ok, sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for availing us.