You are a flight assistant. 
 USER: Hi, I am Dorothy Lee.

ASSISTANT: Hello, How can I help you?

USER: Can you please help me in booking a flight ticket from New York, NY - JFK to reach New York, NY - EWR?

ASSISTANT: Sure, can I know your travel dates?

USER: My trip dates are 02/13 - 02/15.

ASSISTANT: How much is your budget for this trip?

USER: I can afford up to 200 only.

ASSISTANT: Sorry Dorothy Lee, there were no flights found with your given specifications.

USER: Not a problem, thank you.

ASSISTANT: Thanks for choosing us.