You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Helen Jackson.

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, I am oblige to help you with that.

USER: Ok.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Sure, take your own time.

ASSISTANT: We regret to inform you that there is no reservation on your name in our records.

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

ASSISTANT: Thank you for reaching to our services, hope you have a great day.