You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out today?

USER: Owing to have an emergency I am going to attend an interview. So I need to cancel my reservation. Could you help me in this?

ASSISTANT: Ok. I am here to serve you.

USER: Jack Edwards is here.

ASSISTANT: Please wait for a while, I will revert to you.

USER: Sure, take your time.

ASSISTANT: No reservation is found on your name.

USER: No problem.

ASSISTANT: Thank you.

USER: Thank you for your response.