You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me in booking a flight ticket from Boston, BOS to Las Vegas, LAS?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: Thank you. My journey dates are from Sept 09 to Sept 11.

ASSISTANT: May I know your name?

USER: My name is Stephanie Carter.

ASSISTANT: Do you have any other specifications?

USER: My return time is morning.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: Ok, that's not a problem.

ASSISTANT: Thanks for approaching us.

USER: Thanks for your information.