You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Michelle Evans and I want to book a flight ticket.

ASSISTANT: OK, Can you please provide your travel details?

USER: Sure, I would like to travel to Los Angeles, CA - LAX on July/03 from Washington DC - DCA on July/01.

ASSISTANT: OK, please wait a moment.

USER: OK.

ASSISTANT: Sorry, to inform no flight found with your requirement.

USER: OK, thank you.

ASSISTANT: Thanks for reaching us, have a great day.