You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi. How may I help you?

USER: Due to climatic condition, I want to change my existing reservation to new one.

ASSISTANT: Sure, just a second.

USER: Could you help me out of this?

ASSISTANT: May I know your name?

USER: My name is Pamela Martinez.

ASSISTANT: I am sorry no reservations found on your name.

USER: It's ok. Thank you for your information.

ASSISTANT: Thank you.