You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Please help me in booking a ticket from LAX to BOS.

ASSISTANT: Sure, I am here to help out. Please provide me your trip dates.

USER: My trip dates are from 01/11 to 01/13.

ASSISTANT: May I know your name to proceed further?

USER: I am Rebecca Carter.

ASSISTANT: I regret to inform you that there is no flight in your route. Sorry for inconvenience caused.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.