You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ryan Wright.

ASSISTANT: How may I assist you?

USER: Can you help me changing my reservation to new travelling dates?

ASSISTANT: Sure, I am here to help you.

USER: Thanks.

ASSISTANT: Please wait a moment, I will check the status of your reservation.

USER: Ok, take your own time.

ASSISTANT: Ryan Wright, no reservation has been found on your name on our database.

USER: That's ok, not an issue. Thanks for your information.

ASSISTANT: Thank you for reaching us.