You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: My self Michelle Walker. Could you please help me with changing my recent reservation.

ASSISTANT: Sure, we are here to assist you. Please stand by.

USER: Sure, take your time.

ASSISTANT: Thanks for your time, there is no active reservation found in your given name.

USER: No issue, thank you for the information and help.

ASSISTANT: Thank you for choosing us.