You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. how may I aid you today?

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

ASSISTANT: Sure, please wait a moment I will check the reservation list.

USER: Please check the reservation on the name Michael Nelson.

ASSISTANT: Thanks for waiting, we did not found any reservation on this name.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us.

USER: Thanks for the help.