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

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket with price under 1000, can you help me with that?

ASSISTANT: Sure, what dates would you like me to book the flight for?

USER: Ok, my travelling dates would be 02/26 and 02/28.

ASSISTANT: Ok, could you please let me know your city codes?

USER: I want to travel from Charlotte, NC-CLT as I need to attend a wedding at Boston, MA-BOS.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no flights found with your requirements.

USER: Thank you for the information.

ASSISTANT: Thanks for reaching us. Have a nice day!.