You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Please inform me how can I best serve you now?

USER: I need to travel from IAH to BOS, can you help me in doing that?

ASSISTANT: Sure, Please share me your trip dates.

USER: My trip dates are Jan 20 to 22.

ASSISTANT: Do you need any way station in between journey?

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I need a business class.

ASSISTANT: May I know your good name please?

USER: I am Brandon Hill.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Ok.

ASSISTANT: We are sorry to inform you that, there is no business class flight found on your requested date.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thanks for contacting us, wish you a great day.