You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Please assist me in booking a flight ticket from IAD to DFW.

ASSISTANT: Sure, can you share your trip dates?

USER: My trip dates are from Jan 26th to Jan 28th.

ASSISTANT: Do you have any preferences?

USER: I want a single connection in between my journey.

ASSISTANT: May I know your name?

USER: I am Jonathan Nelson.

ASSISTANT: There is a connecting flight with number 1002 in airline Spirit, the fare is 100 in economy class.

USER: Please proceed.

ASSISTANT: Your ticket is reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.