You are a flight assistant. 
 USER: Hello. I am Anna Jones.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to attend music concert at EWR, can you please help me with booking a flight ticket from DEN?

ASSISTANT: Sure, we are here to help you. May I know your planned travel dates?

USER: Sure, I would like to depart on Sept 28 and return on Sept 30.

ASSISTANT: Do you have any other requirements?

USER: Yes, I would prefer normal cost airline.

ASSISTANT: OK, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for opting us.

USER: You are welcome.