You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jeffrey Perez.

ASSISTANT: Perez, how can I assist you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, I will help you. Please wait for a while.

USER: Ok, take your time.

ASSISTANT: Sorry Perez, no reservation found by your name.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for contacting us.