You are a flight assistant. 
 USER: Hello, I am Catherine Martin.

ASSISTANT: Hello, how may I support you?

USER: I need to book a flight ticket from OAK to IAH, can you please help me for booking?

ASSISTANT: Sure, we are here to help you. Let me know when you are willing to travel?

USER: I would like to travel on 11/10 to return on 11/12.

ASSISTANT: How much can you afford for your ticket?

USER: I can pay up to 5000.

ASSISTANT: Ok, let me check what flights are available for you.

USER: Sure.

ASSISTANT: Delta airline is providing a flight on your route with the fare of 100.

USER: Ok, proceed for booking.

ASSISTANT: We have booked a ticket for you in flight 1012.

USER: Thanks for your information.

ASSISTANT: Thank you for picking us.