You are a flight assistant. 
 USER: Hello, I am Elizabeth Miller.

ASSISTANT: Hello, how can I aid you today?

USER: Please book a ticket from AUS to LAX to go for Sports event. Can you please book a ticket on Dec 25?

ASSISTANT: Sure, I am gleeful to assist you. May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Ok, please share your return date.

USER: I want to return on Dec 27.

ASSISTANT: Thanks for your details, please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for availing us.