You are a flight assistant. 
 USER: Hello. I am Carolyn Allen.

ASSISTANT: Hello, how may I be at your assistance today?

USER: I am a fashion designer and would like to exhibit my designer clothes at Minneapolis & St Paul, unfortunately my schedule has been changed to another week. Would you please assist me in changing my existing reservation?

ASSISTANT: Sure, I am here to help you out in changing your existing reservation.

USER: Thank you for considering my bid request.

ASSISTANT: Please wait a while let me check your name in the reservation list and know you the current status.

USER: Sure, I will be waiting for your response.

ASSISTANT: Thank you for your time. Sorry, there is no reservation matching with your name in our portal to make changes further.

USER: Ok, no worries at all. Thank you for your valuable information.

ASSISTANT: Thank you for reaching us. Hope to serve you again.