You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: My name is Cynthia Harris, can you help me to cancel my reservation?

ASSISTANT: I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a while, I will get back to you.

USER: Sure, take your time.

ASSISTANT: I am sorry to say that there is no reservation found.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for contacting us.