You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, May I know what kind of service you are expecting from us?

USER: I made reservation earlier to know some information about the ancient people in the Metropolitan museum, which is located in Philadelphia. Due to some personal issues, I am not able to visit the museum. Can you please assist me in changing my existing reservation?

ASSISTANT: Sure, I can change your reservation as per your request.

USER: Thank you.

ASSISTANT: I need your name to find your reservation, which has done earlier to change as per your request, please mention here?

USER: The ticket has been reserved with the name of James Wright.

ASSISTANT: Please wait for a couple of minutes, I will get back to you within a less time.

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

ASSISTANT: Thanks for being on hold,. I have checked in the reservation list to change your ticket, but could not find any reservation in your name.

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

ASSISTANT: Pleasure is mine to assist you. Thanks for visiting us.