You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Myself Melissa Hall. Due to some business meeting, I am going to cancel my reservation. Can you please help me for this?

ASSISTANT: Sure, I am here to help you.

USER: Thank you very much for quick access.

ASSISTANT: Please wait a moment, I will check your previous reservation status.

USER: Ok, I will wait for your response.

ASSISTANT: Melissa Hall, no reservation has been found on your name in our database.

USER: Not a big problem, anyhow thank you very much for your service.

ASSISTANT: Thank you for approaching us.

USER: You are most welcome.