You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am looking for a flight from DCA to LAX, can you help me out?

ASSISTANT: Sure, can you provide your planned travel dates?

USER: My travel dates are from 02/05 till 02/07.

ASSISTANT: May I know your good name please?

USER: Myself Elizabeth Mitchell.

ASSISTANT: There are no flights available on those dates. Mitchell.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: Welcome.