You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Justin Lopez.

ASSISTANT: How can I assist you today?

USER: I am planning to attend music concert at San Francisco, can you please help me with booking a flight ticket?

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: Sure, I would like to take off on 05/06 and return back on 05/08.

ASSISTANT: Ok, please provide me airport codes too.

USER: My source airport code is HOU and the destination airport code is SFO.

ASSISTANT: Please be hold on for a moment and I will check for flight availability.

USER: Ok, but please make sure that the price limit does not exceed 500.

ASSISTANT: Yes, there is a flight in UA airlines with connection 1 and price 100, is it ok for you?

USER: Yes, please proceed with the booking.

ASSISTANT: Ok Lopez, I have confirmed a ticket with flight number 1001.

USER: I appreciate your help, thank you.

ASSISTANT: My pleasure. Thank you for choosing us, have a great journey.

USER: You are welcome.