You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation. Can you help me with that?

ASSISTANT: Sure, we will help you.

USER: Thank you.

ASSISTANT: Please help me with your name to check your details in reservation list.

USER: I am Janet Thomas.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found with your name.

USER: Ok, no issues.

ASSISTANT: Thank you for contacting us.

USER: Thanks for the information.