You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Mark Taylor here.

ASSISTANT: How can I assist you today?

USER: I want to meet my ex-wife at Philadelphia, so please book my ticket from Oakland.

ASSISTANT: Could you please provide me your trip dates?

USER: My itinerary dates are 02/08 and 02/10.

ASSISTANT: May I know your airport codes please?

USER: I will travel from OAK to PHL.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Flight 1020 of UA airlines is available for you, shall I book?

USER: Please book my ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for opting us.