You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Due to bad weather conditions, I want to change my existing reservation. Can you help me out?

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Linda Taylor.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: There is no reservation found under your name.

USER: That's ok, thank you.

ASSISTANT: Most welcome.