You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Laura Jackson. I would like to change my reservation as I am going to my niece housewarming, can you please help me out?

ASSISTANT: Yes, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Can you please give me a minute to check the ticket status?

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that, there is no reservation found with your name in our chart list.

USER: Ok no problem, thank you for your valuable services.

ASSISTANT: You are welcome. Thank you for reaching us.