You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Nancy Harris, want to travel from AUS to EWR. Please help me.

ASSISTANT: Sure, can I know your travelling dates?

USER: My travel dates are from 01/27 to 01/29.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: That's fine, thank you.

ASSISTANT: Thank you.