You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I'm Anthony Lee. I am planning to attend music concert at DCA, can you please help me with booking a flight ticket from EWR?

ASSISTANT: Ok, I will help you with that. Can you please help me with the travel dates?

USER: Sure, I would like to take off on 12/05 and return back on 12/07.

ASSISTANT: Ok, please wait a minute.

USER: Please make sure that the connection limit is 0.

ASSISTANT: Sorry, there is no flight available which is matching to your requirements.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: You are welcome. Thank you for reaching us.

USER: You are welcome.