You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me to change my reservation dates to next week?

ASSISTANT: Yes, I will help you in change of flight ticket reservation.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Sure, my name is Patrick Young.

ASSISTANT: Wait for a moment please.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting.

USER: No issues, thank you for your information.

ASSISTANT: Sorry to inform you that I have not found your flight reservation to change it.

USER: No problem.

ASSISTANT: Thank you.

USER: Thank you.