You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am looking for a flight from DTW to SEA, can you help me?

ASSISTANT: Do you have any specifications?

USER: I prefer to travel in business class with a connecting flight.

ASSISTANT: Can I know your travelling dates?

USER: My trip dates are 09 to 11 of July.

ASSISTANT: Please provide your name?

USER: Matthew Smith here.

ASSISTANT: Sorry currently there are no flights for your requirement.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thanks.