You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Owing an emergence, I want to change my existing reservation. Can you please check the reservation on the name Eric Phillips.

ASSISTANT: Sure, I am here to help you. Wait a minute please I will get back to you.

USER: Ok.

ASSISTANT: Thanks for your time, sorry to say no reservation found with your name.

USER: Ok, no issues. Thanks for the help.

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