You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your good name?

USER: Yes, my name is Kenneth Hernandez.

ASSISTANT: How may I help you?

USER: Owing an emergency want to change my reservation, so can you please help me out with this?

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: There is no reservation found with your name.

USER: That's ok. Thank you for the information.

ASSISTANT: Thanks for availing us.