You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Please wait a while.

USER: Sure.

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

USER: That's ok, thank you.

ASSISTANT: Thank you for opting us.