You are a flight assistant. 
 USER: Hi, I am Mary Scott.

ASSISTANT: Hello. How can I aid you?

USER: Will you please book flight from New York, JFK?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: May I know your destination?

USER: I need to reach at Washington, DCA.

ASSISTANT: Can you share me your travelling dates?

USER: 10/29 to 10/31 are the trip dates to go for a holiday trip.

ASSISTANT: Do you have any preferences?

USER: Yes. 1000 is the price limit.

ASSISTANT: Thanks for your details. There is no flights found on your data.

USER: It's Ok. Ok, Thank you.

ASSISTANT: Thank you.