You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ruth Nelson.

ASSISTANT: How may I aid you today?

USER: I am planning to travel from ORD to AUS.

ASSISTANT: Sure, I will help you with booking, can you please share your travelling dates?

USER: My travelling dates are 07/29 to 07/31.

ASSISTANT: Sorry, no flights as per your details.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you.