You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I am Amanda Mitchell from Oakland.

ASSISTANT: Ok.

USER: I want to change my existing reservation due to some health issues. Can you be my helping hand in this?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while, I will check with the reservation list on your name and revert to you.

USER: Sure, I will wait.

ASSISTANT: Thank you for being patient, There was no reservation found on your given name.

USER: Not a problem. Thank you for your information.

ASSISTANT: Thank you for opting us.