You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Andrew Gonzalez.

ASSISTANT: Nice to meet you Andrew.

USER: I want to change my recent reservation due to heavy rainfall. Can you help me?

ASSISTANT: Sure, I will help you with that. Please give me a moment.

USER: Ok.

ASSISTANT: Sorry Andrew, no reservation has found under your name in reservation list.

USER: That's fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the help.

ASSISTANT: You are welcome.