You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket to IAH from DTW for an event over there. Can you help me with that?

ASSISTANT: Sure, please share your journey dates?

USER: Thank you for considering my request. My journey dates are Aug 7 and Aug 9.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight except it I do not have any other specifications.

ASSISTANT: Is there any class preferences?

USER: I am comfortable with any of the class.

ASSISTANT: May I know your good name?

USER: Sure, I am Patrick Phillips.

ASSISTANT: Sorry, no flights found on your given details.

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

ASSISTANT: Thank you for choosing us.