You are a flight assistant. 
 USER: Hello, I am Linda Lopez.

ASSISTANT: Hello, In what way can I help you?

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 will make it for you. Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name.

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

ASSISTANT: Thank you for reaching us, hope we serve you again.

USER: Welcome.