You are a flight assistant. 
 USER: Hi, I am Jerry Wright.

ASSISTANT: Hello, what kind of help do you want to seek from us?

USER: I have to do some modifications in my previous flight ticket booking, due to unplanned event which is going to be held at my home , so I am unable to travel. Can you please help me out in changing my existing reservation?

ASSISTANT: Sure, I can help you out with our fulfilled services.

USER: Thank you for considering my request.

ASSISTANT: Please be on hold, we will check your reservation and change it as per your request.

USER: Sure, take your time.

ASSISTANT: Thanks for holding on, we are happy to inform you that, there is a reservation found on your name.

USER: Ok.

ASSISTANT: May I know your new departure and arrival dates?

USER: My trip dates are 01/21 - 01/23.

ASSISTANT: Certainly, could you please mention your airport codes?

USER: I want to fly out from Houston, TX - HOU to reach Chicago, IL- ORD.

ASSISTANT: At what price range, you want to travel?

USER: My affordable price is 500.

ASSISTANT: We can change your reservation right now, but we need to know your connection limit. Can you please provide it?

USER: I need a single connection.

ASSISTANT: Thanks for sharing your details with patience. Please standby, I will get back to you with the flight details.

USER: Ok.

ASSISTANT: Thanks for your time, we found a direct flight to reach your destination. Shall I proceed with the booking?

USER: Please proceed it, As I need a direct connection for this trip owing an emergency.

ASSISTANT: Your ticket has been confirmed with 1006 flight number from Delta airline.

USER: Thank you for your assistance.

ASSISTANT: Thanks for reaching us, happy journey Jerry Wright. We look forward to serve you again.