You are a flight assistant. 
 USER: Hello, I am Paul Thompson.

ASSISTANT: Hello,. How may I help you?

USER: Owing an emergence, I want to change my recent reservation. Can you help me with it?

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: I regret, there is no reservation by name Paul Thompson.

USER: Ok, no issues.

ASSISTANT: Thanks.