You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me to change the ticket details in the previous reservation?

ASSISTANT: Sure, I will help you. May I know your name please to check your reservation status?

USER: My name is Michael White.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Michael White, no reservation has been found on your name in our records.

USER: It's ok, not a problem with that. Thank you for your time.

ASSISTANT: Thank you for approaching us.