You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Dorothy Miller here. I need to book a flight ticket form Boston. Could you please help me in booking a flight ticket from BOS to CLT?

ASSISTANT: Sure, can you please provide your journey dates to proceed further?

USER: My journey dates are from 01/24 to 01/26.

ASSISTANT: Wait a moment please.

USER: Sure, I will wait.

ASSISTANT: Dorothy Miller, there are no flight services available on this route on your provided dates.

USER: Ok, no problem. Thank you for your help in searching.

ASSISTANT: Thank you for contacting us.

USER: Most welcome.