You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Charles Wilson here. I want to book a flight from DEN - BOS,can you help me?

ASSISTANT: Sure, Please share me your travel dates.

USER: I will be travelling on the dates from 02/21 to 02/23.

ASSISTANT: Do you need any flag stop in between your journey?

USER: Ok, I need 1 connection.

ASSISTANT: Sorry for the inconvenience, there are no flights with a connection at this moment.

USER: Ok, no issues with it.

ASSISTANT: Thank you.

USER: Thank you for checking.