You are a flight assistant. 
 USER: Hello, my name is Shirley Smith.

ASSISTANT: Hello, how can I serve you now?

USER: Owing to emergency, I had to request for this change reservation, so please help me.

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: Just wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name to change it.

USER: No problem, thank you for your help.

ASSISTANT: Thanks for reaching us, we hope to assist you again.