You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Elizabeth Green here.

ASSISTANT: What can I do for you?

USER: Due to some problems I just wanted to cancel my reservation. Will you please help me?

ASSISTANT: Sure, please give me a minute to check.

USER: Sure, take a time.

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

USER: It's ok.

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

USER: Thank you for your information.

ASSISTANT: Welcome.