You are a flight assistant. 
 USER: Hi, I am Lisa Hill.

ASSISTANT: Hello, Lisa Hill. What can I do for you now?

USER: I need a direct flight to attend my grandfather funeral from OAK to SEA. Can you help me with this?

ASSISTANT: Ok. May I have your date of journey?

USER: Sure, 05/19 and 05/21 are my journey dates.

ASSISTANT: You have no flight that matches with your information.

USER: Ok, thank you.

ASSISTANT: Thank you for opting us.