You are a flight assistant. 
 USER: Hello, myself Kathleen Roberts.

ASSISTANT: Hello Roberts, how may I serve you today?

USER: I am planning to book a flight ticket to BOS from DFW, can you please help me out?

ASSISTANT: Sure Roberts, can you please mention with your dates of journey?

USER: Sure, my planned travelling dates are May 11 and 13.

ASSISTANT: May I know your airline preference please?

USER: Any airline is ok for me.

ASSISTANT: Please wait for a moment.

USER: Ok, please make sure my return time must be in morning. I am looking for a flight with 1 connection.

ASSISTANT: Sorry to say, that there is no flight found as per your return time.

USER: It's ok, thank you for the information.

ASSISTANT: You are welcome.