You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Matthew Wright.

ASSISTANT: How can I aid you?

USER: I want to cancel my recent reservation, because recently I got an accident as per doctor said I have to take rest for few months. will you help me?

ASSISTANT: Sure, give me  a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: No problem, thank you.