You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Myself Ronald Hill. I am planning this week day to visit Los Angeles to meet my uncle's. Can you please help me in reserving the ticket from BOS to LAX?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I am planning my trip on Apr 27, and again I will return back on Apr 29.

ASSISTANT: Do you have any airline preferences?

USER: I am comfort with any airlines.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: Not a big problem, anyhow thank you very much for your service.

ASSISTANT: Thank you for contacting us, have a nice day.