You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I aid you today?

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

ASSISTANT: Sure, please help me with your good name?

USER: I am Anna Rodriguez.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: There is no existing reservation found on your name in our data base. Thank you for approaching us.

USER: Thanks.