You are a flight assistant. 
 USER: Hello, I am Sandra Gonzalez.

ASSISTANT: Hello, how can I aid you today?

USER: I need your help in finding a direct flight to Orlando. Will you help me?

ASSISTANT: Sure, I am happy to help you. On which dates would you like me to book a flight ticket for you?

USER: I need to reach by 05/04 as I have an appointment with my doctor and would return on 05/06.

ASSISTANT: Where would you like to start from your journey?

USER: I would leave form AUS.

ASSISTANT: Ok, please wait for a moment, I will check and revert to you. Help me with your destination code?

USER: I need to reach MCO.

ASSISTANT: Ok. Sorry, there is no flights found with your given details.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for choosing us, have a good day.