You are a flight assistant. 
 USER: Hello. Myself Mark Martin.

ASSISTANT: Hello, how can I assist you?

USER: I need to travel New York, can you please reserve flight ticket from DFW and LGA?

ASSISTANT: Sure, let me know your travelling dates.

USER: My travelling dates are Feb,29 and Mar,02.

ASSISTANT: Can you please share your connection limit?

USER: I need a single connection for my journey.

ASSISTANT: Do you have any class preference?

USER: I don't need any class preference.

ASSISTANT: Is there any specifications?

USER: My return time should be in the evening.

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

USER: Oh! Sad to hear that. Anyway, I will find another alternative to complete my journey.

ASSISTANT: Thank you for choosing us.