You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please help me in booking a flight ticket to BOS from DEN in April month?

ASSISTANT: When you are willing to travel?

USER: Sure, my planned travel dates are Apr 01 and Apr 03.

ASSISTANT: May, I know your good name?

USER: Yes, I am Dorothy Thomas.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need single connecting flight for my journey.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Not an issue with that, anyways thank you for the information.

ASSISTANT: Thank you for reaching us.