You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, good morning.

USER: Good Morning.

ASSISTANT: Please let me know what kind of guidance are you looking from us?

USER: Actually, my assistant being unaware of the recent change in my schedule, booked a flight to New York for a business meeting.

ASSISTANT: Ok, so let me know how can I help you?

USER: As the date of the meeting is postponed to the next week, could you help me in modifying the dates in my existing reservation?

ASSISTANT: Could you please let me know on whose name the reservation had been booked?

USER: The reservation is made with my name which is Karen Green.

ASSISTANT: Ok, please give me a moment to check.

USER: Sure, take your time to check for any existing reservation.

ASSISTANT: Sorry Karen, I could not able to find reservation with the given name.

USER: That's ok, I think my assistant has cancelled the reservation beforehand.

ASSISTANT: Ok, thank you for reaching us. Have a great day.

USER: Thank you for your service.

ASSISTANT: You are welcome. We are much obliged to serve you.