You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Paul Carter.

ASSISTANT: Welcome to airlines travelling agency, how can I assess you?

USER: I would like to change my reservation because I am not feeling well, can you please help me?

ASSISTANT: Sure, I am here to help you. Please be on hold for a while to check it.

USER: Sure, take your time.

ASSISTANT: Thank you for your time in waiting. I am sorry, that there is no reservation found on your requested name.

USER: That's fine, not an issue.

ASSISTANT: Is there anything that I can help you?

USER: Thank you for your service.

ASSISTANT: Ok, thank you for your time in approaching us. Have a nice day.