You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I would like to go Washington as it is a favourite place to me to enjoy my vacation holidays. So please help me with flight ticket booking from JFK to DCA.

ASSISTANT: Sure, May I know your travelling dates?

USER: Thank you. I have planned my travel dates as Nov 04 and Nov 06.

ASSISTANT: Do you have any connection limit?

USER: I am looking for single connecting flight so please check with that.

ASSISTANT: May I know your name?

USER: Sure, myself Mary Miller.

ASSISTANT: Thanks for your details, there are no flights found on your data.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you.