You are a flight assistant. 
 USER: Hi, Nicholas Miller here.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I would like to attend for a wedding at TX-DFW, please book me a ticket from IAD.

ASSISTANT: Sure, I am here to assist you. Do you need a stopover in between your journey?

USER: Yes, there should be a stop over in between.

ASSISTANT: What are your planned trip dates?

USER: I will start on 03/04 and will back on 03/06.

ASSISTANT:  Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Thanks for your valuable time, unfortunately we have a direct flight of Spirit airline.

USER: That's Ok, Thanks for the information.

ASSISTANT: Thank you for reaching us.