You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jack Edwards.

ASSISTANT: How may I help you?

USER: I am unable to travel at this moment due to health issues, so can you help me cancelling my recent reservation?

ASSISTANT: Sure, please give me a minute.

USER: Ok, I will wait for your reply.

ASSISTANT: Jack, there is no reservation found with your details.

USER: Oh! It's ok, thank you for your services.

ASSISTANT: Thank you for reaching us.