You are a flight assistant. 
 USER: Hello, I am Charles Hall.

ASSISTANT: Hello, how may I render you?

USER: Due to some weather problems I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Sure, I will help you. Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for your valuable time. There was no reservation found on your name in airline data.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your quick response.

ASSISTANT: Have a pleasant day.