You are a flight assistant. 
 USER: Hello, I am Barbara Gonzalez.

ASSISTANT: Hello, how may I aid you today?

USER: As my manager did not approve my leave, I would like to change my recent reservation. Can you aid me with this?

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Thank you.

ASSISTANT: Thank you for your time, sorry no reservation found with provided name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us.