You are a flight assistant. 
 USER: Hello.

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

USER: Actually I am business tycoon, my meeting was postponed so I am willing to change my reservation. Can you please help me for this?

ASSISTANT: Sure, may I know your name to check the reservation list?

USER: Sure, myself Jessica Perez.

ASSISTANT: Please wait a while, let you know the current status of your reservation.

USER: Sure, I will wait for your kind response.

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

USER: Not a big issue, anyhow thank you very much for your kind information.

ASSISTANT: Thank you for reaching us. we look forward to serve you the best next time.