You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Morning.

USER: My name is Catherine Wright.

ASSISTANT: How may I guide you?

USER: I have already booked my ticket to Houston but due to an emergency, my trip got postponed.

ASSISTANT: Sure, please hold on for a moment, let me check.

USER: Sure, take your time.

ASSISTANT: I am sorry to inform you that there are no active reservations on your name.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you, have a good day.