You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Benjamin Nelson.

ASSISTANT: How may I assist you? Benjamin, nice to meet you.

USER: I want to visit the Statue of Liberty at New York, please book the ticket from DCA to EWR.

ASSISTANT: Sure, let me know dates of travel.

USER: My travel dates are 08/17 and 08/19.

ASSISTANT: Sorry for the inconvenience, there is no flight according to your details.

USER: It's ok, thanks for the information.

ASSISTANT: Thank you for choosing us.