You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Amy Jones. Can you please help me in finding a flight ticket from the locations LAS to DCA?

ASSISTANT: Sure, I will help you out.

USER: Thank you.

ASSISTANT: May I know your travelling dates please?

USER: My trip dates are 12/08 and 12/10.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your time.

ASSISTANT: Sorry, there are no flights found. Thank you for choosing us.

USER: It's ok, thank you for searching the flight.