You are a flight assistant. 
 USER: Hi. Nancy Mitchell here. Can you book me a ticket from ORD to AUS?

ASSISTANT: Hello, how may I guide you? Can I know your preferable dates?

USER: Ok, here are my travel dates 09/20 and 09/22.

ASSISTANT: I am sorry, there are no flights available with your name.

USER: No issues, thank you for the help.

ASSISTANT: Thank you, have a good day.