You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,. May I know your name please?

USER: Sure, myself Debra Allen.

ASSISTANT: How may I be at your assistance today?

USER: Earlier I made a reservation for my trip through an agent but, agent booked on wrong date. So, I request you to please change it to my actual date. Can you please assist me in changing my existing reservation?

ASSISTANT: Sure, let me check the reservation list and I will revert to you with the current status.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for your time.

USER: My pleasure.

ASSISTANT: We could not find any reservation by the name you provided.

USER: Ok, no issues. May be I have done a wrong booking. Thanks for your prompt response.

ASSISTANT: Thank you for consulting us. Hope to serve you again.