You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I am Richard Baker.

ASSISTANT: Ok.

USER: Help me in changing my existing reservation as my plan to attend for a music festival got postponed.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute, I will check with the reservation and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting.

USER: Ok.

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

USER: It's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for connecting with us.