You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jennifer Lewis.

ASSISTANT: How can I aid you?

USER: Can you help me in booking my flight ticket from LAX to DTW?

ASSISTANT: Sure, I am glad to help you. May I know on what dates you are willing to travel?

USER: My trip dates will be June 21st to June 23rd.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any class preferences?

USER:  I need a business class.

ASSISTANT: Do you have any requirements?

USER: My return flight should be in the afternoon.

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

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us.