You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I have to change my reservation due to my planned event got postponed. So  please help me with that.

ASSISTANT: Sure, I am here to help you. May I know your name?

USER: Thank you. Please check  the  reservation with  my name Jeffrey Adams.

ASSISTANT: Thank you. Please wait, let me check your reservation status.

USER: Sure, take your time to check.

ASSISTANT: Sorry, no reservation found under your name in our database.

USER: Oh! It may not be booked  properly. Anyway, thank you for your time.

ASSISTANT: You are most welcome.