You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Charles Miller.

ASSISTANT: How can I assist you at this moment?

USER: I want to visit Los Angeles from LGA to LAX. Can you find a flight ticket for me?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Sure, my planned trip dates are on 08/01 and return on 08/03.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.