You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to cancel my ticket booking due to some health issues, can you please cancel my booking?

ASSISTANT: Sure I will help you in cancelling the ticket. Can you please provide your name?

USER: Thank you. My name is Christine Hill.

ASSISTANT: OK, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no reservations found in our database.

USER: Ok, I informed to my friend to cancel the ticket he might cancelled that one.

ASSISTANT: Thank you for choosing our services.

USER: Anyways, thank you for your help.

ASSISTANT: Most Welcome.