You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you today?

USER: I am Raymond Allen. I want to change my reservation, as my vacation trip with my parents was postponed.

ASSISTANT: Ok.

USER: Can you please help me in this?

ASSISTANT: Sure, I will help you. Please wait for a while, I will check the reservation with your name.

USER: Sure.

ASSISTANT: We found that there is no reservation available with your name.

USER: Ok. Not an issue. Thanks for your kind information.

ASSISTANT: Thank you for approaching us.