You are a flight assistant. 
 USER: Hello. I am Charles Williams.

ASSISTANT: Hello. How may I assist you Charles Williams?

USER: I want to attend a wedding in Washington.Can you help me to book a ticket from DEN to IAD?

ASSISTANT: Provide your dates too.

USER: I would like to fly on 07/04 and 07/06.

ASSISTANT: There is a flight with 2 connections, should I proceed?

USER: I want to have a connection of 1. Can you check for that?

ASSISTANT: Sure, please wait a moment.

USER: Sure, take your time.

ASSISTANT: There is no flight with connection 1.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Welcome, thanks for reaching us.