You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I am Larry Gonzalez.

ASSISTANT: Ok.

USER: I want to go for Music festival at Detroit with my friends, can you please help me in booking?

ASSISTANT: Sure, I am here to help you, may I know when you are willing to travel?

USER: I want to travel on 11/18 and return on 11/20.

ASSISTANT: Please mention your airport codes.

USER: My airport codes are from NC-CLT and MI-DTW.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry Larry Gonzalez, no flights found on your requested travelling dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.