You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: I would like to attend a sports festival at New York, EWR so, can you book a ticket from DFW?

ASSISTANT: Sure, May I know the travel dates?

USER: My travel dates are 07/08 - 07/10.

ASSISTANT: May I know your name?

USER: My name is Anna Williams.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for opting us.