You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: My name is Jeffrey Mitchell. I need a flight ticket with a connecting flight. Can you help me  with booking on 11/21?

ASSISTANT: Sure, may I know your airport codes and other travelling date?

USER: I would like to attend my Niece birth day party at BOS from CLT. I will be return on 11/23. Price limit is 500.

ASSISTANT: Thanks for waiting, there is no flights found on your given requirements.

USER: Ok, No problem. Thanks for the information.

ASSISTANT: Thank you.