You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: Owing to an emergency I need to change my reservation, can you please help me with that?

ASSISTANT: Sure, may I know your good name?

USER: My name is Kevin Brown.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for choosing us.