You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my recent reservation due to cyclone in Los Angeles, can you please help me?

ASSISTANT: Sure, may I know your name?

USER: Myself Sandra Martin.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Sandra, no reservation is available on your name.

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

ASSISTANT: Thank you for contacting us.

USER: Your most welcome.