You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I am Patricia Williams. I am planning to attend the food festival with my family members in Washington DC-IAD, can you please book a flight ticket?

ASSISTANT: Sure, can you please provide the dates of your travel?

USER: My travelling dates are 09/26 and 09/28.

ASSISTANT: May I know your source code?

USER: My source code is NY-JFK.

ASSISTANT: Do you need a stopover in between the journey?

USER: Yes, I need a stopover.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for contacting us.