You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Emma Moore. I would like to travel from BOS to LAX, could you help me out?

ASSISTANT: Please provide your trip dates.

USER: My preferable dates are from 03/07 to 03/09.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: Sorry Emma, no flight is available on your route.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for reaching us.