You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Stephen King.I am planning to attend a sports event at Austin, can you please help me with booking a flight ticket?

ASSISTANT: Could you please provide your travelling dates?

USER: Sure, my departure date is on 11/27 and the return date is on 11/29.

ASSISTANT: Could you please provide you airport codes?

USER: It is from BOS to IAD with 0 connection.

ASSISTANT: Sorry, there is no flight available with 0 connection.

USER: No, problem.

ASSISTANT: Thank you for reaching us.

USER: Anyways, thank you for the checking. You are welcome.