You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Myself Stephanie Hill, I want to attend entrepreneur meeting at Angeles. Can you please help me in booking the ticket from DCA to LAX?

ASSISTANT: Sure, can you please tell me your travelling dates, so I can proceed with the information?

USER: I am willing to travel on 04/19 and again I will return back on 04/21.

ASSISTANT: Ok, please give me a minute while I am searching the flight with the details you have provided.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for your waiting Hill, I have checked based on your request and it is showing that there is no flight found.

USER: Not a big deal, anyhow thank you very much for your kind information.

ASSISTANT: Thanks for your choosing us, have a great day ahead.