You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Donald Miller here.

ASSISTANT: How can I assist you Miller?

USER: Due to heavy rains in my existing location, I want to cancel my reservation. Could you help me in cancellation of ticket?

ASSISTANT: Sure, I'll definitely help you in that. Please be online.

USER: Ok, take your time.

ASSISTANT: Miller, there is no reservation found under your name to do cancellation.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for choosing us.