You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you please help me in booking a flight ticket from EWR to PHL to go for holiday trip?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: My planned trip dates are June 30 and July 02.

ASSISTANT: May I know your name to proceed further?

USER: I am Donna Martinez.

ASSISTANT: Sorry Donna Martinez, there is no flight in your route.

USER: Ok, no problem. Thank you for your response.

ASSISTANT: Thank you for reaching us.