You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

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

ASSISTANT: Sure, I am here to help you, may I know your name please?

USER: Sure, my name is Margaret Collins.

ASSISTANT: Please hold on for a moment to check your reservation status.

USER: Ok.

ASSISTANT: Collins, I did not find any reservation with your name in my database.

USER: That's ok, thank you.

ASSISTANT: It's my pleasure. Thank you for reaching us.