You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my recent reservation due to the ongoing tornado at my destination has been postponed. Can you help me with changing?

ASSISTANT: Sure, can I have your name please?

USER: Timothy Mitchell is my name.

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no flight reservation found with your name.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.