You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my existing reservation as my political interaction with people got postponed due to heavy rains. Can you please change my reservation?

ASSISTANT: Sure, I can help you. May I know your name?

USER: I am Anna Lee.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for your time. We didnt  found any reservation by this name.

USER: No issues, thanks for your quick response.

ASSISTANT: Thank you for contating us.