You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: I want to visit capitol building at Austin, TX - AUS. Please help me with my flight ticket booking.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Could you please help me with your travelling dates?

USER: My travelling dates are 07/21 and 07/23.

ASSISTANT: May I know your  source code?

USER: My source airport code is MSP.

ASSISTANT: Please wait for a while, I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: May I know your name?

USER: My Name is Samuel Mitchell.

ASSISTANT: Sorry, currently no flights are running to your desired location due to some technical issue with destination airport.

USER: No problem. Thank you.

ASSISTANT: Thank you for approaching us, have a nice day.