You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,.

USER: I am Charles Thompson.

ASSISTANT: How can I render you?

USER: I need to cancel my recent reservation due to my illness.

ASSISTANT: Ok.

USER: Will you help me in cancelling my ticket?

ASSISTANT: Sure, I am glad to assist you.

USER: Thank you.

ASSISTANT: Please wait for a second.

USER: Sure.

ASSISTANT: Thanks for waiting, I found a reservation in your name and that has been cancelled successfully.

USER: Ok, Thank you for your service.

ASSISTANT: Thanks for approaching us.