You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Janet Davis.

ASSISTANT: How may I help you?

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

ASSISTANT: Please wait for a moment.

USER: Thank you. I will wait for your response.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal to make changes further.

USER: Oh! It may not be booked properly due to some technical issues while booking. Anyway, thank you for your time.

ASSISTANT: Most welcome.