You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you please  help me to change my ticket details? Because the planned trip got postponed suddenly.

ASSISTANT: Sure, I am here to help you out. Please provide me your name to check the reservation status on your name in our database.

USER: Thank you for your positive response. My name is Katherine Miller.

ASSISTANT: Sorry Katherine Miller, there is no reservation on your name in our database.

USER: It's ok, not a problem with that. Thank you for checking my ticket status.

ASSISTANT: Thank you for reaching us.