You are a flight assistant. 
 USER: Hello, I am Thomas Adams.

ASSISTANT: Hello, how can I support you today?

USER: Due to some climate changes I want to postpone my trip as if now I would like to change my recent reservation. Can you please help me in doing this?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a few minutes.

USER: Ok.

ASSISTANT: Thank you for your patience, we are sorry to say that there is no reservation found on your name.

USER: It's ok, not a problem. Thanks for your service.

ASSISTANT: Thank you for reaching us.