You are a flight assistant. 
 USER: Hello,. I am Anna Davis.

ASSISTANT: Hello, how can I assist you today?

USER: I have a plan to visit some historical places at New York, please help me out. I need a connecting flight.

ASSISTANT: Ok, may I know your source and destination airport codes?

USER: I want to fly from DEN to EWR.

ASSISTANT: Please share your planned journey dates.

USER: My travelling dates are from 05/16 to 05/18.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, no flights found with your given details.

USER: No issues, thank you.

ASSISTANT: Thank you for choosing us.