You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Myself Joseph Collins. I Would like to meet my friend at Las Vegas, will you help me in booking the flight ticket from BOS to LAS?

ASSISTANT: Sure, can you please say me your travelling dates, so I can proceed with the information.

USER: My travelling dates are 01/05 and 01/07.

ASSISTANT: Sorry, I could not find any flight with your travel dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thanks for choosing us, have a great day.