You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for the day?

USER: I want to celebrate my birthday with my family at Detroit, can you please help me to book a flight ticket from ORD to DTW?

ASSISTANT: Sure, when are you planning to start and return on?

USER: Sure, my travelling dates are Aug 25 and Aug 27.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Can I know your good name?

USER: My name is Mark Campbell.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for consulting us.