You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, I will help you on that. Please mention the name for checking the reservation.

USER: Sure, please check with my name Scott Scott.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, there is no reservation found under your name.

USER: Oh! May be booking has not done properly. Anyway, thank you for your time.

ASSISTANT: Welcome, have a great day.