You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you help me in booking a flight ticket to DTW from HOU?

ASSISTANT: May I know your travelling dates please?

USER: Sure, my planned travelling dates are June 28 and June 30.

ASSISTANT: Do you have any connection limit?

USER: I need single connecting flight for my journey.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: Yes, I am Jack Walker.

ASSISTANT: I am sorry no flights found on your route.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for choosing us.