You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I am Thomas White from Minneapolis.

ASSISTANT: Welcome to flight booking agency Thomas.

USER: Thank you. I want to change my travel dates in my previous reservation, due to some problems I am unable to travel those dates so can you please help me with that?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thanks.

ASSISTANT: Please be on hold to check your previous reservation.

USER: Ok, take your time.

ASSISTANT: Sorry to inform you that, our database showing that there is no reservation with your name.

USER: But I got a confirmation message from your agency when I booked my flight ticket.

ASSISTANT: Sorry for the trouble caused to you, but our database showing the same thing. Can you please reconfirm on which name you have to book the flight ticket?

USER: At that time I have reserved the ticket in my name only.

ASSISTANT: Sorry, still we didn't find your reservation with this name.

USER: But I had paid money at that time, you're saying there is no reservation in my name, what about my money?

ASSISTANT: If such a case is happened, don't worry about it. your money will be credited into your account within two days.

USER: But please inform me as early as possible because I have to go to Houston next week.

ASSISTANT: Sure, you will get a confirmation message from our agency as your money is credited or not.

USER: I really appreciate all the hard work you’ve done to help me. Thank you.

ASSISTANT: Thank you for approaching us, hope you have a great day.

USER: Most welcome.