You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I need to change my recent reservation details because I am unable to travel. Can you please help me in changing the ticket details?

ASSISTANT: Sure, we are here to help you.

USER: Thank you for considering my request.

ASSISTANT: Sorry, to say this there is no reservation found on your name in our portal.

USER: It's ok, thank you for checking the ticket status.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.

ASSISTANT: May I know your good name.

USER: Sure, my name is Angela Parker.

ASSISTANT: Thank you.