You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: Angela Jackson on this end. I just want to cancel my existing reservation due to my flu, can you help me?

ASSISTANT: I will help you with that. Please wait for a minute.

USER: Ok, take your time.

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

USER: Oh! That's very sad news to hear. Anyways, thank you for checking.

ASSISTANT: Thank you for choosing my agency.

USER: Moat welcome.