You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to cancel my recent reservation because of my friend's marriage, can you help me?

ASSISTANT: Sure, can I know your name?

USER: My name is Sarah Clark.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: No issues.

ASSISTANT: Thank you for reaching us.

USER: Thanks for checking.

ASSISTANT: You are welcome.