You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I oblige you?

USER: I am Thomas Walker. I have to attend a Music Concert at Detroit, could you please help me with booking a flight ticket from CLT to DTW?

ASSISTANT: Sure, when do you want to depart and return?

USER: I would like to take off on 10/28 and return on 10/30.

ASSISTANT: Ok, May I know your price limit?

USER: My price limit is 5000.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, There were no flights found with your given requirements.

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us.