You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you for the day?

USER: I am Jonathan Clark. I need to book a flight ticket from OAK to LAS, can you please help me for booking?

ASSISTANT: Sure, we are rapturous to help you.

USER: Thank you.

ASSISTANT: Do you have any restrictions  on price limit?

USER: I need a price limit with in 500.

ASSISTANT: Can you please let me know your depart and arrival dates of your journey?

USER: I would like to travel on 10/15 to 10/17.

ASSISTANT: Ok, please be on hold for some time.

USER: Sure.

ASSISTANT: We found a Southwest airlines matching your essentials, and the fare of 100. Shall I proceed?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been reserved with 1026 flight number in economy class.

USER: Thanks for your information.

ASSISTANT: Thank you for approaching us.