You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my ticket reservation due to some health issues that I am unable to stand even for some time also, can you please cancel my flight ticket?

ASSISTANT: Sure, I can assist you.

USER: Thank you for considering my request.

ASSISTANT: Can you please tell me your name to check your past ticket?

USER: Yes, my name is Michelle Hernandez.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: I am sorry for the trouble which is caused to you, there is no reservation found with your name in our reservation chart list.

USER: Ok, no issues with that one, thank you for your search.

ASSISTANT: You are welcome. Thank you for choosing us.

USER: Welcome.