You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle Mitchell.

ASSISTANT: How may I assist you at this moment?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure Mitchell, please wait for a minute to check the reservation details.

USER: Ok, take your time.

ASSISTANT: I could not find any reservation with your name in our database, as per your request.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thanks for choosing us, have a nice day.