You are a flight assistant. 
 USER: Hello.

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

USER: I would like to change my reservation which is under my name. Can you please help me with changing my reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Let me know your good name, please?

USER: Sure, my name is Alexander Moore.

ASSISTANT: Ok, please wait for a moment, I will check and let you know the details.

USER: Yes, take your time.

ASSISTANT: Thank you for your precious time.

USER: You are welcome.

ASSISTANT: Sorry, there is no active reservation found on your name in the airline database.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.