You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Jessica Lopez. Assist me in changing the reservation, as my visa got rejected.

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: Thanks for your valuable time. There is no reservation found with your name.

USER: Ok, thank you.

ASSISTANT: Thanks for reaching us.