You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: As I am planning to conduct an event at Oakland on 02/14, can you help me to book a flight ticket from Houston?

ASSISTANT: Surely, I will help you. May I know the journey codes?

USER: I need to depart from Houston, TX-IAH to reach Oakland, CA-OAK.

ASSISTANT: Please help me with your travel dates.

USER: I will return from Oakland on 02/16.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: May I know your name?

USER: I am Mark Roberts.

ASSISTANT: We have found a direct flight from Delta airline. Shall I proceed?

USER: No, please make sure I need a connecting flight.

ASSISTANT: Ok. Thank you for availing us.

USER: Thank you for information.