You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: George Brown here. I would like to book a flight ticket from IAD to AUS, can you please aid me in making an airline reservation?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My planned travel dates are July 9th and July 11th.

ASSISTANT: Is there any class preference for you?

USER: I prefer to travel in business class.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.