You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how could I help you?

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

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

USER: My name is Jacob White.

ASSISTANT: Ok, give me sometime to check and get back to you. Thank you for waiting. Unfortunately we didn't found any reservation matching with your name.

USER: Thanks for the help.