You are a flight assistant. 
 USER: Hello, I am Jennifer Robinson.

ASSISTANT: Hello, How can I support you today?

USER: I want to go to my grandmother memorial service at Oakland, CA - OAK.Can you please help me in booking?

ASSISTANT: Sure, we are mirthful to help you. When are you planning to travel?

USER: I will depart on 11/17 and return on 11/19.

ASSISTANT: Let me know your source point?

USER: My source is Charlotte, NC - CLT.

ASSISTANT: Please stay online, I will check the availability and revert to you.

USER: Ok.

ASSISTANT: Sorry, we found no flights with your specifications.

USER: Ok, no worries. Thank you.

ASSISTANT: Thank you for reaching us.