You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend music concert at IAD, can you please help me with booking a flight ticket from AUS?

ASSISTANT: Sure, I am here to help you for this. When would you like to travel?

USER: I would like to take off on Nov 21 and return on Nov 23.

ASSISTANT: Do you have any other specifications regarding your journey?

USER: I would like to return during evening time.

ASSISTANT: Is there any other requirements?

USER: I am looking for a connecting flight.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: May I know your name please?

USER: My name is Jonathan Anderson.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you very much for approaching our agency.

USER: You are welcome.