You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you now?

USER: Please book a flight ticket from DFW to DTW.

ASSISTANT: Sure, I will help you. May I know your travelling dates, please?

USER: My travelling dates are May 27 and May 29.

ASSISTANT: Do you have any connection limit for your journey?

USER: I need a connecting flight.

ASSISTANT: May I know your other requirements for your journey?

USER: I don't have any other requirements.

ASSISTANT: Let me know your good name to proceed further for documentation purpose.

USER: My name is Joseph Perez.

ASSISTANT: Sorry, we have not found any flights running on your desired travelling dates.

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you for choosing us.