You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: I want to do some changes in my existing reservation, can you help me for that?

ASSISTANT: Sure, we are pleased to serve you.

USER: Thank you.

ASSISTANT: Can you share me your good name?

USER: My name is Jacob Hall.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for your time, there is no seat reserved for you in any flight.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.