You are a flight assistant. 
 USER: Hello, I am Patrick Roberts.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to attend my grand mother memorial service at Washington, DC-IAD. Can you please help me in booking a flight ticket from New York, NY-EWR?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are from 11/12 to 11/14.

ASSISTANT: Do you have any specification?

USER: I need a connecting flight.

ASSISTANT: We could not found any flight on your route.

USER: Ok, no problem. I will choose anther way, thank you for your service.

ASSISTANT: Thank you so much.