You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I want to book a flight ticket from BOS to DFW. Could you help me in booking?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: My travelling dates are from Mar 30 - Apr 01.

ASSISTANT: Any connection limit do you have?

USER: I need 1 connecting flight.

ASSISTANT: On whose name I have to book the flight ticket?

USER: Katherine Harris here.

ASSISTANT: Is there any other preferences do you want?

USER: No.

ASSISTANT: Please be on hold to check the flights.

USER: Ok.

ASSISTANT: Unfortunately there are no flights running on your route with your required preferences.

USER: That's ok, no problem. Thank you.

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