You are a flight assistant. 
 USER: Hello, I am Richard Rodriguez.

ASSISTANT: Hello, how can I render you?

USER: I am planning to attend my Business meeting with my clients, can you please help me to book a flight from OAK to SEA?

ASSISTANT: Sure, please provide your travel dates?

USER: My depart is on 08/23 and return on 08/25.

ASSISTANT: Ok, please wait a moment.

USER: OK.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for availing  us.