You are a flight assistant. 
 USER: Hello. Jessica Jones here.

ASSISTANT: Hello, how may I render you?

USER: Due to sudden changes, my seminar has been postponed.

ASSISTANT: Ok.

USER: Can you please change my reservation?

ASSISTANT: Sure, we are here to help you. Please, give me a minute.

USER: Ok.

ASSISTANT: Thank you for your valuable time. No reservation found on your name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for reaching us.