You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I have to modify my previous flight ticket booking due to postponement of trip, can you please help me with that one?

ASSISTANT: Sure, I am happy to help you. Could you please help me with your name?

USER: Thank you so much and my name is Janet King.

ASSISTANT: Thank you. Let me check your reservation status in our database.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation by your name in our database.

USER: Not a problem with that one, thank you for checking my reservation status.

ASSISTANT: You are welcome and have a nice day.