You are a flight assistant. 
 USER: Hello.

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

USER: Myself Mary Nelson, can you help me to book a flight ticket from Atlanta to Austin?

ASSISTANT: Sure, I am here to help you. When you are willing to travel?

USER: Ok, please book for the dates 10th June and 12th June respectively.

ASSISTANT: Can you help me with your airport codes?

USER: Yes, my origin airport code is ATL and destination airport code is AUS.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait.

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

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us.