You are a flight assistant. 
 USER: Hello. I am Virginia Scott.

ASSISTANT: Hello, how can I help you?

USER: I am planning to go for a fishing at Phoenix, help me in booking my flight ticket from Oakland CA-OAK.

ASSISTANT: Sure, please share me your travelling dates?

USER: My planning travelling from 04/22 to 04/25.

ASSISTANT: Can I know your destination code?

USER: My destination point is AZ-PHX.

ASSISTANT: Thanks for your details. There is no flights with your specifications.

USER: Its ok, thank you for your assistance.

ASSISTANT: Thank you for reaching us.