You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Nicole Collins, can you please help me in changing my existing reservation details?

ASSISTANT: Sure, please give me a minute.

USER: Ok, take your time.

ASSISTANT: Collins, there is no reservation found with your details.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.