You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you book a flight ticket from DFW to BOS?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 04/15 to 04/17.

ASSISTANT: Do you need any stopover in between your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry to say no flights found with your details.

USER: Ok, No issues.

ASSISTANT: May I know your name please?

USER: Thank you. My name is Kathleen Thompson.

ASSISTANT: Thank you for reaching us, have a nice day.