You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Cynthia Jones. Will you please change my existing reservation because, the boarding meeting was postponed?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Wait for a minute.

USER: Sure.

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

USER: Ok. Thank you.

ASSISTANT: Thanks for choosing us.