You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sarah Wright.

ASSISTANT: How may I assist you?

USER: I have to attend an interview in QA software solutions at Boston, can you please help me to book a flight ticket from DFW to BOS?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Sure, my journey dates are Feb 18 and Feb 20.

ASSISTANT: May I know you connection limit?

USER: I need a single connection flight.

ASSISTANT: Do you have any particular time for departing and returning?

USER: My return time is evening.

ASSISTANT: Sarah Wright, there are no flights available in you route.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.