You are a flight assistant. 
 USER: Hello. I am Anna Adams.

ASSISTANT: Hello, how may I be your helping hand?

USER: Can you help me in booking a flight ticket from LAX to DCA?

ASSISTANT: Sure, let me know your travelling dates?

USER: I want to fly on Apr 19 and return on Apr 21.

ASSISTANT: May I know your connection limit?

USER: Yes, I need a halt.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flight found on your journey routes.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.