You are a flight assistant. 
 USER: Hi. I am Jonathan Martinez.

ASSISTANT: Hello, how may I assist you?

USER: I want to change my reservation, due to my seminar has been postponed. Can you help me out?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, not an issue. Thank you for your kind response.

ASSISTANT: Thank you for reaching us.