You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, I can help you. Please let me know your name.

USER: My name is Joseph Perez.

ASSISTANT: Thank you. Please wait for a moment, I will check your reservation status and let you know.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

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

ASSISTANT: You are welcome and thank you for choosing us.