You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I need to cancel my previous flight ticket booking that I am unable to travel due to some health problems, can you help me with cancellation?

ASSISTANT: I am willing to help you, may I know your name to proceed further?

USER: Thank you so much and my name is Jessica Lewis.

ASSISTANT: Ok, please wait.

USER: Sure, I can wait for your response.

ASSISTANT: Sorry, no flight is reserved with your name.

USER: Not an issues with that one, I think it is not booked properly while I was booking. Thank you for your help.

ASSISTANT: Welcome Jessica Lewis.