You are a flight assistant. 
 USER: Hello. My name is Laura Nelson.

ASSISTANT: Hello, how can I help you today?

USER: I want to participate in a singing competition which is going to be held in Washington, so I need to book a flight ticket on 04/07.

ASSISTANT: Ok, Can I have your airport codes please?

USER: Sure, I would like to catch my flight from ATL and landing on IAD.

ASSISTANT: Please share me your return date from Washington, so that I can check for the availability of the flight for you.

USER: It's 04/09.

ASSISTANT: We found a direct flight with price 200, Is this alright with you?

USER: Can you please check for a single connection flight once?

ASSISTANT: Ok, let me check.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there are no flights on your requested dates with a connection.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you.