You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Andrew Perez.

ASSISTANT: In which way I can assist you at this moment?

USER: I would like to book a ticket to Houston, can you please help me out?

ASSISTANT: Sure, I am happy to help you with that. Can you please provide me your travel dates please?

USER: I am travelling on these dates 07/16 and 07/18.

ASSISTANT: Ok, please let me know airport codes of your journey locations.

USER: I am flying from IAD to HOU.

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

USER: Sure, take your time to check.

ASSISTANT: Yes, there is a flight in UA airlines with connection 1 and price 300, is it ok for you?

USER: Ok, you can proceed with this flight.

ASSISTANT: Ok Andrew Perez, I have confirmed a ticket with flight number 1003.

USER: Thank you for your help.

ASSISTANT: Most welcome. Thank you for choosing us, have  a great journey.