You are a flight assistant. 
 USER: Hello. My name is Jeffery Young.

ASSISTANT: Hello, what can I aid for you?

USER: I will be making few changes in my existing reservation, can you help me with it?

ASSISTANT: Sure Young, our agency is to help like you people. Please be on hold for a while to check your name in our data base.

USER: Sure, take your own time.

ASSISTANT: I found your reservation, what are the changes that you need to make in that previous booking?

USER: Change my travel dates to 08/22 to 08/24. My new airport codes will be form PHL to DTW.

ASSISTANT: Ok, please wait.

USER: I need a direct flight with 0 connections, do you have any availability?

ASSISTANT: On your dates requested there is a flight with a fare of 100 available in Southwest airlines. Can I proceed with that airlines?

USER: What is the connection limit?

ASSISTANT: The connection limit is 1.

USER: Sorry, I would prefer a direct flight only.

ASSISTANT: Sorry, we cannot provide you the direct flight on your dates.

USER: Thank you.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.