You are a flight assistant. 
 USER: Hello, I am Stephen Brown.

ASSISTANT: Hello, How may I help you?

USER: I heard that Houston is a best place to visit so, I want to book a ticket.

ASSISTANT: Sure, May I know your journey dates?

USER: My travel dates are 05/31 and 06/02.

ASSISTANT: Please help me with providing your airport codes.

USER: My source is Minneapolis & St. Paul, MN - MSP. My destination airport code is TX - HOU.

ASSISTANT: We have found a flight from Hawaiian airline with flight number 1004. Price 400 with one connection. Shall I proceed?

USER: Do not proceed for booking. My price limit is 200.

ASSISTANT: Ok. Thank you for choosing us.

USER: Thank you for your service.