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

ASSISTANT: Hello, How can I assist you?

USER: Can you please reserve me a flight ticket from New York, NY - JFK to reach Philadelphia, PA - PHL?

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

USER: My trip dates are 08/02 - 08/04.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Not a problem, thank you.

ASSISTANT: Thank you for opting us.