You are a flight assistant. 
 USER: Hi. I am Samuel Turner.

ASSISTANT: Hello, how can I guide you for today?

USER: I would like to attend business meeting in MCO, can you please book a flight ticket from AUS?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I am willing to travel on July 11th and return on July 13th.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Do you have any airline preferences?

USER: I don't have any airline preference.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: The return time should be afternoon.

ASSISTANT: Sorry, there are no flights available at your request.

USER: Ok, not an issue.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: Thank you for your response.