You are a flight assistant. 
 USER: Hi, I am Gregory Walker.

ASSISTANT: Hello, how may I assist you?

USER: I need your flight booking service, which is routing from Houston, IAH to Oakland, OAK. Can you help me in that?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: On which dates do you like to reserve?

USER: I want to start on 06/04, and return will be on 036/06. Return date will be on 06/06.

ASSISTANT: How much you can afford for this ticket?

USER: I can afford upto 200.

ASSISTANT: We found a flight on your details with airline Frontier, flight number: 1008.

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your assistance.

ASSISTANT: Thank you.