You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anna Martinez, can you help me to book a flight ticket?

ASSISTANT: May I know your travelling codes?

USER: Sure. I just want to travel from AUS to AUS for shopping for my wedding.

ASSISTANT: Can you please provide me your travelling dates?

USER: I am planning to travel on 12/07 and 12/09. I want direct flight.

ASSISTANT: Sorry to say no flights found on your details.

USER: Ok. Thank you for your service.

ASSISTANT: Thank you for reaching os.