You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Please help me out in booking the ticket from BOS to DEN.

ASSISTANT: Sure, I can help you to book the ticket. Can I know your journey dates please?

USER: My trip dates will be Mar 9 to Mar 11.

ASSISTANT: Ok, please share me your preference about the connection limit.

USER: I need a direct flight.

ASSISTANT: Ok, please tell me your planned specific timings to depart and return.

USER: No.

ASSISTANT: What is your name?

USER: My name is Patricia Nelson.

ASSISTANT: Sorry to tell you that, there are no flights found with your travel details.

USER: That's ok, thank you.

ASSISTANT: Most welcome. Thank you for choosing us.