You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to celebrate my birthday at DFW. Can you please book a flight from JFK?

ASSISTANT: Sure, can I know your travelling dates to search for the flight?

USER: Sure, I want to travel on June 11 and need to return on June 13.

ASSISTANT: Do you have any class preferences?

USER: Yes, I need an economy class.

ASSISTANT: May I know your requirements?

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

ASSISTANT: There is a connecting flight 1004 of Delta airlines, can I proceed?

USER: Ok, please proceed.

ASSISTANT: May I know your name?

USER: Brandon Taylor here.

ASSISTANT: Your booking is done in economy class.

USER: Thank you.

ASSISTANT: You are welcome.