You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am looking for a flight from IAD to BOS, can you help me in booking?

ASSISTANT: Sure, could you please let me know your dates of journey?

USER: Sure, my planned travel dates are Nov 29 and Dec 01.

ASSISTANT: May I know your good name please?

USER: Myself Ashley Lewis.

ASSISTANT: Are you looking for any other help from my side please?

USER: Please look for a connecting flight that's it.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Lewis, there is no flight found as per your travelling details.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: You are welcome.