You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am a science student and I actually made a reservation earlier to New York but now I changed my mind to go to Chicago instead as one of my friend lives there and he can help me for my project. Will it be possible to change my reservation?

ASSISTANT: Sure, before that may I know on what name the reservation was done previously?

USER: Yes, it was made on the name Jacob Baker.

ASSISTANT: Wait for a moment, I will check it out whether the reservation exists or not.

USER: Sure, I will be waiting for your response.

ASSISTANT: Thanks for waiting, I did not found any reservation showing active on your name in our database for updating.

USER: That's Ok, thanks for your response.

ASSISTANT: Thanks for contacting us, have a nice day.