You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: Can you aid me to change my reservation due to an emergency?

ASSISTANT: Sure, may I know your good name please?

USER: Stephanie Walker here.

ASSISTANT: Ok, please wait for some time.

USER: Sure.

ASSISTANT: There is no existing reservation found on your name in our records.

USER: Ok,thank you for the help.

ASSISTANT: Thank you for reaching us.