You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Pamela Miller.

ASSISTANT: How can I aid you?

USER: I need to cancel my recent reservation as there is a sudden meeting with my clients on the day of my journey. Will you help me?

ASSISTANT: Ok. Wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, thank you for sharing your information.

ASSISTANT: Thanks for choosing us.