You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I want to change my reservation which is done recently due to some problems, can you please help me?

ASSISTANT: Yes, I am here to help you out. Please provide me your name so I can check for the reservation status.

USER: Sure, my name is Samantha Jackson.

ASSISTANT: Please hold on for a while I will check.

USER: Sure, I will wait.

ASSISTANT: Ok, thank you for waiting.

USER: It's my pleasure.

ASSISTANT: Sorry as per our records there is no reservation been found on your name.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Ok, thank you for availing our service.