You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Yesterday I booked a ticket to New York through your agency, your agent by mistakenly booked a ticket on wrong dates, so I want to change my reservation.

ASSISTANT: Yes, I will help you. Please wait for a moment to check your details in my records.

USER: Ok, sure take your time.

ASSISTANT: Meanwhile, may I know your name?

USER: Sure, myself Jacob Brown.

ASSISTANT: No reservation is found on your name.

USER: Oh! its ok.

ASSISTANT: Sorry for inconvenience.

USER: Its ok. Thank you for the information.

ASSISTANT: You are welcome.