You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am planning to attend music concert at DFW, can you please help me with booking a flight ticket from SEA?

ASSISTANT: Sure, please share your trip dates.

USER: I would like to take off on June 20 and return on June 22.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer business class.

ASSISTANT: Can I know your good name?

USER: My name is Rebecca Anderson.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

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

ASSISTANT: Thank you.