You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: This is Jeffery Lopez.

ASSISTANT: How can I guide you today?

USER: I want to book a ticket from DEN to ORD, can you help in that?

ASSISTANT: Sure, I am perky to help you.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: I will be travelling from 06/22 to 06/24.

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

USER: Either way I am fine.

ASSISTANT: Thanks for your details, there is no flight found on your desired routes.

USER: Never mind, thank you.

ASSISTANT: Thank you for reaching us.