You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, is there any help that I can assist you?

USER: I just want to change my existing reservation, due to sudden demise of my grand mother. Can you help me in amending my reservation?

ASSISTANT: Sure, I am glad to assist you and can you please assist me with your name for checking purpose?

USER: Sure, the ticket has been reserved on the name George Johnson.

ASSISTANT: Please give me a moment to find your reservation.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for being on hold, I have checked based on your request and it is shown that there is no reservation found for the user name in our back end.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: You are most welcome and have a nice day.