You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you?

USER: I am Ruth Hernandez. I want to change my existing reservation. Can you be my helping hand in changing reservation?

ASSISTANT: Sure, please standby.

USER: Ok.

ASSISTANT: Thanks for waiting. You have no reservation found on your name.

USER: Not an issue.

ASSISTANT: Thank you for opting us.

USER: Thank you for your help. Have a great day.