You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am Michael Moore. I am planning to go for a trip at AUS, can you please book a ticket in economy class from LGA?

ASSISTANT: Sure, may I know your planned travel dates to check for the flight availability?

USER: My travelling dates are 07/15 and 07/17.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight.

ASSISTANT: Sorry to say, there are no flights available for your desired connection.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us.