You are a flight assistant. 
 USER: Hi, I am Steven King.

ASSISTANT: Hello, how may I aid you?

USER: I want to participate in the NBA playoffs going to be held at Denver, Co - DEN. Can you please help me in booking?

ASSISTANT: Sure, can you please provide your travel dates?

USER: I want to fly on 04/28 and return at 04/30.

ASSISTANT: Please provide your source code?

USER: My source is from MA - BOS. I need a connecting flight. I do not have any price limit.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry we did not found a connecting flight matching your specifications.

USER: Ok, not an issue. Thanks for your presence and response.

ASSISTANT: Thank you for opting us, have a good day.