You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket for my vacation. Will you please help me?

ASSISTANT: Sure, could you please provide your name for further proceedings?

USER: I want to travel from AUS to BOS. My preferable dates are 06/10 and 06/12. I am Paul Hill. Please tell me is there any flight available on these dates?

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Could you please provide your price and connections limit?

USER: There should be no connections and the price limit is 200.

ASSISTANT: Sorry, there is no flight available as per your request . Thank you for contacting us.

USER: Oh!it's OK. Thank you.