You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I want to fly from DCA to JFK. Can you book a ticket from that route?

ASSISTANT: Sure, can I know your trip dates?

USER: My planned travel dates are 05/29 and 05/31.

ASSISTANT: Do you need any connection limit?

USER: I am comfortable with direct flight only.

ASSISTANT: Do you need any other specifications?

USER: No more, thank you.

ASSISTANT: May I know your name?

USER: Sure, Steven Hall here.

ASSISTANT: There are no flights available on your routes.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for choosing us.