You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency, my meeting with client got cancelled. So I want you change my existing reservation.

ASSISTANT: Sure, may I know your name?

USER: Sure, Michelle Rodriguez here.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for choosing us.