You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I render you today?

USER: I want to cancel my reservation which is done recently due to some health issues, can you please help me?

ASSISTANT: Sure, may I know your good name please?

USER: Sure, my name is John Davis.

ASSISTANT: OK, please give me a minute.

USER: Sure, take your time.

ASSISTANT: There is no recent reservation found on your name in our records.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Anyways, thank you for your valuable time.