You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to book a ticket from EWR to AUS, can you please help me to book a ticket?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates are on Aug 26 and Aug 28.

ASSISTANT: Do you have any preferences about flight connections?

USER: I need a direct flight to my destination.

ASSISTANT: Do you have any specifications about class?

USER: No.

ASSISTANT: Please mention your name.

USER: Jeffery Allen.

ASSISTANT: There is no flights found under your preferable details.

USER: Ok, not an issue. Thank you.

ASSISTANT: Welcome, have a great day.