You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: I am Sarah Hall.

ASSISTANT: I hope you are fine.

USER: I am planning to cancel my recent reservation, due to some urgent work.Can you please cancel my reservation?

ASSISTANT: Sure, I will check with that details, please wait for a while.

USER: That's fine, take your own time.

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

USER: That's really sad to hear. Thank you for your help.

ASSISTANT: Thank you for approaching us, have a nice day.