You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: As I have planned to travel to Houston in next week but suddenly my trip got cancelled due to ill health. Can you please help me about my cancellation of my reservation?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you for considering my request.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to say that, there is no reservation found based on your name in our database.

USER: It's ok, anyways thank you for the information.

ASSISTANT: Thank you for contacting us.