You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I aid you today?

USER:  I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed.

ASSISTANT: Ok.

USER: Can you please help me to change my reservation?

ASSISTANT: Sure, we are here to aid you.

USER: Thank you.

ASSISTANT: Let me know your name to check with the reservation.

USER: Sure, my name is Margaret Gonzalez.

ASSISTANT: Ok. There is no reservation found on your name Margaret Gonzalez.

USER: Ok, no issue.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your help.