You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I have to change my reservation with my new travelling dates. Will you please help me with that?

ASSISTANT: Sure, I will help you. May I know your name?

USER: Thank you. Myself Jeffrey Campbell.

ASSISTANT: Please wait, let me check your reservation status in our database.

USER: Sure, take your time.

ASSISTANT: Jeffrey Campbell, I have not found any reservation under your name in our database.

USER: Oh! It may not be booked properly due to server issues while booking. Anyway, thank you for your time.

ASSISTANT: You are welcome and thank you for choosing us.

USER: Most welcome.