You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am planning to change my reservation, due to heavy rainfall in Seattle, can you help me?

ASSISTANT: Sure, I will help you with that. Can you please provide your name to check your previous reservation?

USER: My name is Emily Lopez.

ASSISTANT: Ok, please be on hold to check.

USER: Sure.

ASSISTANT: Sorry to inform you that, there is no reservation found with your name in our records.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for approaching us, have a great day.