You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, may I know your name to proceed?

USER: Sure, I am Cynthia Roberts.

ASSISTANT: Please wait for a moment to check your details.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, no reservation found on your name.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for reaching us.