You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Christopher Perez.

ASSISTANT: How may I help you out?

USER: Can you please book a flight ticket from DFW to DTW?

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

USER: Sure, I need to travel on dates of 03/29 and 03/31.

ASSISTANT: Please hold on.

USER: Sure but please make sure that connection should be 0.

ASSISTANT: Sorry, there are no flights found.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us.