You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I provide assistance to you?

USER: I intend to travel from New York to establish new relationships at Washington. Can you help me book a flight ticket on 06/17?

ASSISTANT: Sure, can you help me with your travelling details?

USER: I need to return on 06/19.

ASSISTANT: Kindly mention your airport codes.

USER: My codes of airport are LGA and DCA.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight in my journey.

ASSISTANT: May I know your good name?

USER: Nancy Moore is my name.

ASSISTANT: Sorry there is no connecting flight matching your preferences.

USER: Ok, thank you.

ASSISTANT: Thank you for availing us, have a good day.