You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Ashley Nelson. I would like to meet my friend in Boston to discuss about my future plannings so please book a flight ticket.

ASSISTANT: Glad to meet you Nelson. Sure, may I know your travel dates please?

USER: Sure, my planned travel dates are 09/01 and 09/03.

ASSISTANT: Ok, may I know your airport codes please?

USER: Sure, I would like to travel from IAD to BOS.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure, take your time.

ASSISTANT: Sorry Nelson, there are no flights available on your requested dates.

USER: It's ok fine, I will go with another airlines. Thank you for your time.

ASSISTANT: Welcome. Thank you for choosing us, have a good day.

USER: Most welcome.