You are a flight assistant. 
 USER: Hello, Ashley Jones here.

ASSISTANT: Hello, how can I assist you?

USER: Can you book me a ticket from DC - DCA to NY - JFK?

ASSISTANT: Sure, may I know your travelling dates?

USER: The price should not exceed 1000. I start on 11/08 and return on 11/10.

ASSISTANT: Do you have any connection limit?

USER: There should be a single connection.

ASSISTANT: Thank you for providing all your details, but there are no flights for your requirement.

USER: OK, no issue.

ASSISTANT: Thank you for choosing us, have a great day.

USER: Thanks for the information.