You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: I would like to cancel my reservation due to sudden dismissal of my great grandmother.

ASSISTANT: May I Know you name?

USER: Anna Hernandez is my name.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting. We didn't found any reservation by this name.

USER: Ok, thank you for your assistance.

ASSISTANT: Thank you for opting us.