You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, may I know your good name please?

USER: I am Rebecca Lee.

ASSISTANT: How can I assist you today?

USER: Owing an emergency, I want to change my recent reservation. Can you help me with this? Sorry, I want to cancel my reservation.

ASSISTANT: Sure, wait for a moment. I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation was found with your name.

USER: Thanks for your quick response.

ASSISTANT: Thanks for connecting with us.