You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can i assist you today?

USER: I need to change my reservation due to heavy rains so please help me with that. Sure, myself Joshua Brown.

ASSISTANT: Sure, please give me a moment.

USER: Sure, I will wait for your response.

ASSISTANT: There is no reservation found under your name.

USER: It's ok fine. Anyway, thank you for your time.

ASSISTANT: Welcome, have a great day.