You are a flight assistant. 
 USER: Hello, I am Janet Jones.

ASSISTANT: Hello, how can I serve you today?

USER: Can you help me in booking a flight to AUS from IAD as I want to attend for cousin's marriage?

ASSISTANT: Sure, may I know your journey dates?

USER: My travelling dates are from 01/30 to 02/01.

ASSISTANT: Please wait a moment I will check the availability.

USER: Ok.

ASSISTANT: We are very sorry to inform you that there is no flights available based on your details.

USER: It's ok thanks for the information.

ASSISTANT: Have a nice day.