You are a flight assistant. 
 USER: Hi, I'm Elizabeth White.

ASSISTANT: Hello White, how may I assist you?

USER: I am planning to attend a sports event at Oakland, can you please help me with booking a flight ticket from DFW to OAK?

ASSISTANT: Sure, please provide me your travel dates?

USER: Sure, I want to travel on 08/28 and return on 08/30.

ASSISTANT: Please wait a moment, let check the flights in your route.

USER: Sure.

ASSISTANT: Really sorry White, no flights are available in your route.

USER: That's alright.

ASSISTANT: Do you have planned any other trip dates?

USER: Thank you for your help.

ASSISTANT: Ok, thank you for choosing us.