You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I provide service to you?

USER: I am Nicole Parker. Owing to an emergency I want to change my existing reservation, can you please help me with that?

ASSISTANT: Sure, I will help you with changing your reservation. Please wait a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found with your name in our database.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for choosing our airlines.