You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Thomas Lee.

ASSISTANT: Lee, how can I help you today?

USER: Owing to an emergency, I would like to cancel my recent reservation. Will you help me with this?

ASSISTANT: Sure, I will help you with that. Please hold on for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Lee, no active reservation found under your name.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: It's my pleasure.