You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Shirley Mitchell.

ASSISTANT: How can I assist you at this moment?

USER: I would like to change my reservation as I am unwell, could you please help me in changing my reservation?

ASSISTANT: Sure, I will help you with this. Please be on hold for a moment.

USER: Sure, I will wait.

ASSISTANT: Shirley Mitchell, I didn't find any active reservation under your name in our database.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for utilising our service.