You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help that I can assist you?

USER: Owing to an emergency I had to request for this cancel reservation. Can you please help me with this?

ASSISTANT: Sure, I am glad to assist you and may I know your name please?

USER: Sure, I am Jennifer Lopez.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found for the user name in our data base.

USER: Ok, Thank you for your help.

ASSISTANT: You are most welcome.