You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Patricia Smith here.

ASSISTANT: Smith, how may I assist you?

USER: Can you please help me in changing my recent reservation? As my planned trip has been changed to some other dates.

ASSISTANT: Sure, I will help you. Please wait, let me check your reservation status in our database.

USER: Sure, take your own time.

ASSISTANT: Sorry Smith, I did not find any reservation under your name in our database.

USER: May be I have done a wrong booking, thank you anyways.

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