You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I be your helping hand today?

USER: Due to sudden change of my business meeting because of some technical problem.

ASSISTANT: Ok.

USER: I need to change my reservation so can you help me with that?

ASSISTANT: Sure, we are here to help you.

USER: Thank you for considering my request.

ASSISTANT: On what name, do I need to check your reservation status?

USER: Please check the reservation on the name of Emma Roberts.

ASSISTANT: Ok, please wait for some time, I will check with your reservation status and revert to you.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for your time.

USER: My pleasure.

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

USER: Oh! May be booking is not done properly. Thank you for the information.

ASSISTANT: Thank you for reaching us with a query. We hope to serve you again. Have a good day.