You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Janet Collins.

ASSISTANT: How may I guide you today?

USER: I need your assistance in altering my existing reservation to Orlando, as I have postponed my trip to some other date. Will you help me with this?

ASSISTANT: Janet Collins, I will help you with that.

USER: Thank you for your considering my request.

ASSISTANT: Please wait for a while, I will get back to you.

USER: Sure, I will wait for your response.

ASSISTANT:  Janet Collins, I am sorry to say that there is no reservation found under your name.

USER: Oh! May be something went wrong while booking the ticket previously. Anyways, thank you for providing information.

ASSISTANT: Thank you for choosing our agency, have a great day.