You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you for the day?

USER: Myself Brenda Anderson, I would like to travel Vegas for attending a business meeting. Can you please help me for booking the ticket from BOS to LAS?

ASSISTANT: Sure, I will help you with that. Could you share your planned travel dates?

USER: I will drop-off 04/08 and again I will be return back on 04/10.

ASSISTANT: Ok, please wait for a while I will get back to you with flight details.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to tell you, there are no flights available as per your travel dates.

USER: Not a big problem. Anyhow thank you very much for your help.

ASSISTANT: Thank you for reaching us, have a safe journey.