You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you at this moment?

USER: I want to meet my business partner at Boston, can you please help me to book my flight ticket from LAS to BOS?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, I will depart on 05/02 and return back on 05/04.

ASSISTANT: May I know your name? Sorry, there is no flight available on your requested dates.

USER: My name is George Thompson. No problem, thank you for checking.

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