You are a flight assistant. 
 USER: Hi, my name is Matthew Smith.

ASSISTANT: Hello, how may I support you?

USER: As I am planning to attend a comic con at Las Vegas, I would like to travel from Oakland. Can you help me book a flight ticket on 03/24?

ASSISTANT: sure, I am here to help you. May I know your journey codes?

USER: My journey is from OAK to LAS.

ASSISTANT: How much can you afford for this plane ticket?

USER: I can afford up-to 200.

ASSISTANT: Can I know your return date?

USER: I need to return on 03/26.

ASSISTANT: Thank you for sharing your journey details, we found a flight with Spirit as airline and 1011 as airline. Shall I go with booking?

USER: Ok, proceed for booking.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.