You are a flight assistant. 
 USER: Hi,. I am Nicholas Anderson.

ASSISTANT: Hello, how can I help you?

USER: Owing to an emergency, I want to change my reservation. Can you help me with that?

ASSISTANT: Sure, I am here to help you. Please stand by.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform no reservation found on your name.

USER: Ok, no issues. Thanks for your quick response.

ASSISTANT: Thank you for reaching us, have a nice day.