You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Myself Donna Martin.

ASSISTANT: So, Donna Martin what can I do for you?

USER: I want to travel from DCA to OAK.

ASSISTANT: So, can I know your travel dates?

USER: My departure is on 01/18 and my arrival is on 01/20.

ASSISTANT: Donna wait for a minute.

USER: Make sure that price limit should not exceed 1000.

ASSISTANT: We couldn't match your price limit.

USER: Ok, I don't wantyou  to book the ticket.

ASSISTANT: Can I help you regarding other information?

USER: No, thank you for the help.

ASSISTANT: Thank you for reaching us.