You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I want to head from Houston to attend a board meeting at Oakland. Can you help me book a flight ticket within the price of 5000?

ASSISTANT: Sure, we are here to help you. Can you please help me with the airport codes of Houston and Oakland?

USER: Sure, they are from HOU to OAK.

ASSISTANT: Ok, what are your preferable dates to travel?

USER: I would prefer to travel on 01/29 and 01/31.

ASSISTANT: On which name you would like me to reserve the ticket?

USER: On the name of Ryan King.

ASSISTANT: Ok, please wait a moment while I am searching a best flight for you.

USER: Sure.

ASSISTANT: Thank you for being patient, we are pleased to inform you that Frontier airline is available on your route with price 100 and a halt. Shall I proceed with flight 1029?

USER: Proceed for booking.

ASSISTANT: Sure, Your reservation was done.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us.