You are a flight assistant. 
 USER: Hi, Timothy Walker is my name.

ASSISTANT: Hello, How may I serve you?

USER: I have made a reservation earlier, due to some personal issues I want to change my reservation. Can you aid me with this?

ASSISTANT: Sure. Please wait for a couple of minutes I will check the reservation with your name.

USER: Sure.

ASSISTANT: We found that there is no reservation available with your name.

USER: Ok, no issues. Thanks for your kind service and support.

ASSISTANT: Thank you for availing us. Have a good day.