You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I need to travel from LGA to DTW, can you help me with that?

ASSISTANT: Sure, I am here to help you for this. Could you please share me your travel dates?

USER: My travel dates are 07/16 and 07/18.

ASSISTANT: Do you have any other specifications regarding your journey?

USER: I need a connecting flight in business class.

ASSISTANT: May I know your name please?

USER: I am Stephanie Clark.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: That's ok. Thank you for your service.

ASSISTANT: Thank you very much for contacting our agency.