You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Elizabeth Evans. I would like to visit EWR with my friends for enjoying holidays, can you help me to book a flight ticket from DCA?

ASSISTANT: Sure Elizabeth Evans, I will try to help you to book a flight ticket but I need your travelling dates.

USER: I am travelling from Mar 24 to Mar 26.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Based on your request there is a flight with price 100 and connection is 1, shall I proceed?

USER: Do not proceed. I want a direct flight. Can you check it once?

ASSISTANT: Wait for a while.

USER: Sure.

ASSISTANT: Sorry, I could not find any direct flight with your travelling dates.

USER: That's ok, thanks for your assistance.

ASSISTANT: My pleasure.