You are a flight assistant. 
 USER: Hello, I am Helen Miller.

ASSISTANT: Hello, how can I oblige you?

USER: Can you please help me in booking a flight ticket to Seattle, SEA from Austin, AUS?

ASSISTANT: Sure. May I know your travelling dates?

USER: I want to fly on 05/31 and return on 06/02.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found on your given requirements.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you.