You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you now?

USER: I need to amend my exiting reservation due to an emergency, can you please help me?

ASSISTANT: Ok,  may I know your name to check with reservation status please?

USER: Sure, my name is Rachel Carter here.

ASSISTANT: Ok, please be on hold for a while.

USER: Sure, I will wait.

ASSISTANT: I am very apologetic to inform you this but there is no reservation available by your name.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing our services.

USER: Thank you for your information.

ASSISTANT: Have a nice day.