You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help that you need from my side right now?

USER: I have to modify my destination airport code because my manager changed the location to conduct the meeting. Can you please help me in changing the ticket?

ASSISTANT: Sure, I can change your flight ticket booking. On whose name the previous flight ticket booking is done?

USER: Thank you for considering my request. I have reserved the previous ticket with my name that is Cynthia Lewis.

ASSISTANT: I have based on your request but it is showing that, no name is obtained on the name in booking list.

USER: Oh! It is sad to hear from your end. Anyways thank you for checking my previous ticket status.

ASSISTANT: You are most welcome and thank you for reaching us. Have a nice day.

USER: You are welcome.