You are a flight assistant. 
 USER: Hello, I am Donna Nelson.

ASSISTANT: Hello, how may I amend you?

USER: Owing to an emergency, I just want to cancel my recent reservation. Can you please assist me?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Please standby let you know the status of your reservation.

USER: Sure.

ASSISTANT: Sorry, we did not find any reservation in your given name.

USER: Thanks for your prompt response.

ASSISTANT: Thank you for approaching us. Have a nice day.