You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Joseph Perez here. Please help me out in booking the ticket from LAX to DTW.

ASSISTANT: Sure, I am glad to help you. Can you please provide me your journey dates?

USER: My trip dates will be Dec 10 to Dec 12.

ASSISTANT: May I know your connection limit?

USER: Connection limit is 1.

ASSISTANT: Is there any class preference?

USER: Business class.

ASSISTANT: Do you have any requirements?

USER: Depart time must be in the morning.

ASSISTANT: Sorry, there are no flights found on your travelling dates.

USER: No problem, thank you.

ASSISTANT: Thank you for approaching us.