You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Betty Martinez here. I want to change my existing reservation due to my board exams. Can you help me for this one?

ASSISTANT: Sure, we are here to help you. Wait for some time I will check the reservation on your name and get back to you.

USER: Sure.

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

USER: No issues, thank you for the information.

ASSISTANT: Thanks for approaching us.