You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your helping hand?

USER: Can you please help me in changing my existing reservation, as my exams got postponed?

ASSISTANT: Sure, let me know on whose name you did the reservation?

USER: I have reserved it on my name only, which is Betty Rodriguez.

ASSISTANT: Ok, please wait a while.

USER: Ok, sure. I will wait for your quick response.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name.

USER: Ok, not a problem. Anyways, thank you for the information.

ASSISTANT: Thank you for availing us.