You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Jeffrey Collins. In this vacation I would like to visit National Mall.

ASSISTANT: That's nice.

USER: Can you help me for booking flight ticket from CLT to IAD?

ASSISTANT: Sure, on which date you would like to start your journey?

USER: My travel starts from 04/02 to 04/04. Make sure that connection limit is 1.

ASSISTANT: There is a flight of UA airlines with 1 connection. Shall I confirm your ticket?

USER: Ok, confirm it.

ASSISTANT: Ok, your ticket is booked successfully.

USER: Thank you for your services.

ASSISTANT: Thank you, have a nice trip.