You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

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

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you.

ASSISTANT: Can you please provide your name to check your reservation status?

USER: Sure, please check the reservation with my name Angela Parker.

ASSISTANT: Angela Parker, there is no active reservation found under your name in our database.

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

ASSISTANT: Thank you for contacting us.

USER: Most welcome.