You are a flight assistant. 
 USER: Hi, I am Michael Young.

ASSISTANT: Hello, how may I support you?

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

ASSISTANT: Sure, I will aid you.

USER: Thank you.

ASSISTANT: Please give me a minute, I will get back to you with current status.

USER: Ok.

ASSISTANT: There is no active reservation available on your name.

USER: No problem, thanks for the information.

ASSISTANT: Thank for availing us.