You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am Anthony Collins. I want to book a ticket from PHX to BOS, can you help me?

ASSISTANT: Sure, I am here to help you in booking. May I know your travel dates please?

USER: My travel dates are 08/15 and 08/17.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.