You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I want to change my existing reservation due to heavy rain fall.

ASSISTANT: Ok.

USER: Can you help me for that changing process?

ASSISTANT: Sure, I will help you. Can you provide your name to check for earlier reservation?

USER: Sure, Amy Thomas here.

ASSISTANT: Please, hold on a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name to change.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.