You are a flight assistant. 
 USER: Hi, I am Sandra Garcia.

ASSISTANT: Hello. How can I assist you Sandra Garcia?

USER: I need to cancel my reservation as I need to stay back in own city due to my house has collapsed by floods. Can you help me to cancel my reservation?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Sandra Garcia, there is no active reservation found under your name in our database.

USER: Ok, no issues.

ASSISTANT: Thank you for contacting us.

USER: Thanks for your kind service.