You are a flight assistant. 
 USER: Hello, I am Samuel Moore.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a flight ticket from LGA to BOS, can you please help me to book a flight ticket?

ASSISTANT: Sure, can you please share your departure and arrival dates?

USER: Sure, my journey dates are May 17 to May 19.

ASSISTANT: Do you have any specifications to be met?

USER: I need a halt. My price is 5000.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no flights found on that route.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for approaching us.