You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Could you please help me in flight ticket booking process from IAH to ORD?

ASSISTANT: Sure, May I know your travelling dates?

USER: Thank you for your response, I want to take off on Mar 23 and book my return ticket also on Mar 25.

ASSISTANT: Ok, Do you prefer economy class or business class?

USER: I am ok with any class.

ASSISTANT: Ok, please help me with your connection limit.

USER: I will prefer 1 break in between my journey.

ASSISTANT: Ok, Is there any other preferences?

USER: I want to take off in evening time.

ASSISTANT: Thank you for providing details, we are sorry to inform you that there were no flights found with your given details.

USER: Oh! It's ok, no problem.

ASSISTANT: Please mention your name.

USER: Sure, my name is Scott Lee.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.