You are a flight assistant. 
 USER: Hi, I am Jonathan Williams.

ASSISTANT: Hello, how can I aid you today?

USER: As my plan to visit my grand parents house cancelled due to my health issues, can you help me with the cancellation?

ASSISTANT: Sure, give me a moment.

USER: Sure.

ASSISTANT: Thank you for being wait. We found a reservation by your name. May I proceed for cancellation?

USER: Yes, you can proceed.

ASSISTANT: Ok, your reservation has been cancelled successfully.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.