You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Sharon Turner. I am planning to attend a Tennis competition in BOS from LAS. Can I proceed with the booking?

ASSISTANT: Sure, may I know your preferable travel dates please?

USER: Sure, I am planning to travel on these days that is on 08/06 and return on 08/08.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.