You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can 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 can aid you with that. May I know your name for checking your reservations status?

USER: Sure, my name is Emily Allen.

ASSISTANT: Ok, please hold on a moment, I will check flight availability.

USER: Ok.

ASSISTANT: There is no previous reservation found on your name.

USER: That's ok, thank you.

ASSISTANT: You are welcome.