You are a flight assistant. 
 USER: Hello. My name is Linda Phillips.

ASSISTANT: Hello, how may I help you?

USER: I am planning to change my existing reservation, due to bad weather.

ASSISTANT: I will check, please give me a while.

USER: Thank you.

ASSISTANT: Sorry, there is no reservation showing on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome. Thank you for reaching us.