You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me in changing my trip dates? as I need to attend a press conference in my home town.

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: Thank you.

ASSISTANT: Ok, wait for some time I will check the reservations on your name and get back to you.

USER: Please check the reservation with the name Christopher Robinson.

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

USER: Its ok, thank you.

ASSISTANT: Thanks for approaching us.