You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to book a flight ticket from EWR to DCA. Could you help me?

ASSISTANT: Sure, may I know your travel dates please?

USER: My travelling dates are from Apr 09 - 11.

ASSISTANT: Can you please share your name?

USER: Amy Martin.

ASSISTANT: Is there any connection limit?

USER: I prefer for connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Amy Martin, there are no flights available in your route.

USER: Thank you ./.

ASSISTANT: Thank you for reaching us.