You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Cynthia Martin is my name. I am looking for a flight ticket with evening as the depart time. So can you book it for me?

ASSISTANT: Sure, Do you need any specifications in connection?

USER: I am fine with any flight.

ASSISTANT: Ok, May I know from where you are flying and landing at?

USER: I am heading from ORD to reach LAX.

ASSISTANT: Ok, when did you scheduled your depart & return?

USER: My planned journey dates are 7 and 9 on the month of March.

ASSISTANT: Ok, May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Ok, Do you have any other requirements?

USER: No.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: I apologise to say this Cynthia Martin, there were no flights which can travel to your region as per your requirements.

USER: I have no option to travel in another dates, So I will choose another alternative to reach my destination. Thanks for your information.

ASSISTANT: Thank you for choosing us.