You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can assist you at this moment?

USER: I am unable to catch the flight due to my health issues. Can you please help me in cancelling my recent reservation?

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

USER: Thank you.

ASSISTANT: Can I have the name on which ticket has reserved earlier?

USER: Yes, my ticket is reserved with name Carolyn Mitchell.

ASSISTANT: Ok, please wait a moment so that I will check whether the reservation existing or not.

USER: Ok, take your own time.

ASSISTANT: Thank you for waiting. Sorry Carolyn, there is no reservation found under your name.

USER: It's ok, no issues. Anyway's thank you for the information.

ASSISTANT: Most welcome. Thank you for choosing us.

USER: You are welcome.