You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Linda Allen. Planning to travel to OAK, can you help me to book a flight from LAS?

ASSISTANT: Sure, can you share your travelling dates?

USER: My travelling dates are 10/26 and 10/28.

ASSISTANT: Give me a moment. There is a flight with number 1004, the fare is 200 in airline Spirit.

USER: Sure, proceed with booking.

ASSISTANT: Your ticket is reserved, happy journey.

USER: Thank you.

ASSISTANT: Thank you for reaching us.