You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I am Donald Williams.

ASSISTANT: Ok.

USER: I would like to go New York to meet my children as they are staying at hostel, so could you please help me with booking a flight ticket to JFK?

ASSISTANT: Sure, I am perky to help you. Do you need any connecting flight?

USER: I need direct flight.

ASSISTANT: Now, tell me your location codes.

USER: Source code is Minneapolis, MSP.

ASSISTANT: Your travel dates please.

USER: Trip dates are 04/27 to 04/29.

ASSISTANT: Ok. Thanks for sharing your details. Unfortunately we did not find any flight based on your request.

USER: No problem. Thank you.

ASSISTANT: Thank you.