You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you at this moment?

USER: Owing to an emergency I had to request for this change reservation.

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

USER: My name is Rebecca Miller.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

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

USER: Thank you.

ASSISTANT: Thank you for reaching us.