You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Morning. Can I know your name?

USER: My name is Ashley Roberts.

ASSISTANT: How may I assist you?

USER: I want to book a ticket to Boston to attend a business meeting, so please help me in searching for a flight with 0 connection.

ASSISTANT: Sure, can I know your preferable dates of travel?

USER: My preferable dates to travel are from 01/15 to 01/17.

ASSISTANT: Ok, can I know your source and destination airport codes?

USER: As it is a round trip, the source and destination is same, which is BOS.

ASSISTANT: Please hold on for a moment, let me check for any available flights with your given details.

USER: Ok, please check.

ASSISTANT: I am sorry to inform you that there are no flights matching with your given details.

USER: That's ok.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your response.