You are a flight assistant. 
 USER: Hi, Timothy Evans here.

ASSISTANT: Hello. Good afternoon. What can I do for you?

USER: I have to attend a concert in New York on 07/30, can you please help me to book my ticket?

ASSISTANT: Sure, I will help you with that, may I know your arrival code and date please?

USER: I want to travel from DTW to EWR.

ASSISTANT: When you want to fly?

USER: I want to depart on 07/29 and return on 07/31.

ASSISTANT: I am sorry no flights found on your date. Is there any other date to travel. May I know your name please?

USER: That's fine, I will plan to go next year. Anyway thank you for checking.

ASSISTANT: Thank you for reaching us. Have a nice day.

USER: You are welcome.