You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Please help me to book a flight ticket from BOS to PHX.

ASSISTANT: Sure, we are happy to help you. Please let me know your travelling dates.

USER: I want to fly on 17 Sep and return on 19 Sep.

ASSISTANT: Do you prefer any lay by in between journey?

USER: I want a connecting flight.

ASSISTANT: Are there any other specifications for you?

USER: I would like to depart in the afternoon.

ASSISTANT: May I know your good name?

USER: Amanda Nelson.

ASSISTANT: Sorry, we are unable to provide flights on your journey routes.

USER: Oh! that very sad to hear, thank you.

ASSISTANT: Thank you for availing us.