You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am Kathleen Martin. I want to book a ticket from AUS to PHL to attend seminar, can you help me in booking?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: I am departing on 05/11 and return on 05/13.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.