You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Debra Clark.

ASSISTANT: Could you let me know, How can I provide assistance to you?

USER: I want to cancel my reservation, can you help me with that?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry Debra Clark, there is no active reservation on your name to cancel it.

USER: Ok, thank you for sharing the information.

ASSISTANT: Thanks for choosing us.