You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Betty Jackson, I already booked a flight ticket to visit my grand father home and now my plan is postponed. Can you change my reservation?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation with your name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.