You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Raymond Robinson. Can you please reserve me a flight ticket from DTW to LGA to attend a flower festival?

ASSISTANT: Sure, let me know your travelling dates.

USER: My planned journey dates are May 16 and May 18.

ASSISTANT: Do you have any limits on number of connections?

USER: I am looking for a flight having single connection.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other requirements?

USER: I would like to depart in the evening time and return in the afternoon time.

ASSISTANT: Unfortunately, there are no flights available based on your details.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.