You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joshua Hill.

ASSISTANT: How can I help you?

USER: I am suffering with typhoid fever, so I am unable to travel to my old office to attend the meeting, can you help in cancelling my ticket?

ASSISTANT: Sure, please wait a while.

USER: Sure, take your own time.

ASSISTANT: As per your request, the reservation is cancelled.

USER: Thank you for your quick response.

ASSISTANT: Thank you for opting us.