You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Due to an emergency, I want to change my reservation. Can you help me?

ASSISTANT: Sure, I am here to help you. May I know your good name please?

USER: Barbara Lewis here.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. Thank you for being patience, there is no active reservation found on your name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.