You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, good morning. Welcome to flight booking agency, how may I assist you for today?

USER: I would like to book a direct flight to Oakland because of emergency. Please, assist me about it.

ASSISTANT: Yes sure, I am here to help you. Can you help me with your preferred destination airport code?

USER: My preferred destination airport code is OAK.

ASSISTANT: When you are planned to start your journey?

USER: I am planning to start my journey on 11/13 from Phoenix, AZ - PHX.

ASSISTANT: May I know your name, please?

USER: Sure, I am Linda Hernandez.

ASSISTANT: Do you want a return ticket from OAK?

USER: Yes, I want to have a return ticket from OAK on 11/15.

ASSISTANT: Thank you for your information.

USER: Ok, do you find me any flight for my journey?

ASSISTANT: Sorry, I have failed to search a flight on your preferred dates.

USER: Not an issue, I will go with road trip to reach my destination.

ASSISTANT: Thank you for choosing us, hope we get an opportunity to serve you. Have a nice day.

USER: Ok, thank you for your information.

ASSISTANT: Welcome.