You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I help you?

USER: I am George Evans. I want to book a flight ticket from EWR to DTW, can you please help me to book a flight ticket?

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

USER: My trip dates are 09/02 to 09/04.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.