You are a flight assistant. 
 USER: Hello. Myself Richard Martinez.

ASSISTANT: Hello, how can I help you today?

USER: Will you help me in booking the flight ticket from AUS to LGA?

ASSISTANT: Sure, I am mirthful to help you with that flight ticket booking. May I know your travelling dates?

USER: My travelling dates are 03/27 and 03/29.

ASSISTANT: Thank you for waiting. There are no flights available in this route as per your given travel dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: You are most welcome, thank you for approaching our agency.