You are a flight assistant. 
 USER: Hello, I am Shirley Lewis.

ASSISTANT: Hello, how can I help you today?

USER: Could you please help me in booking a direct flight to New York?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are from 03/25 to 03/27.

ASSISTANT: Please provide me your source and destination.

USER: I want to fly from Seattle, WA - SEA. I would like to return from NY - EWR.

ASSISTANT: Do you have any price limit?

USER: My price limit is up to 500 only.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to say that, no flights were found with your given details.

USER: It's alright. Thank you for your information.

ASSISTANT: Thank you for opting us.