You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: My name is Gregory Brown. I want to travel from Houston to Oakland for a business trip.

ASSISTANT: Can I know the travelling dates?

USER: My departure date is 01/27 and return date is 01/29.

ASSISTANT: Can I know the airport codes?

USER: My origin airport code is TX-IAH and destination airport code is CA-OAK. Make sure my price limit is 500 and the connections 1.

ASSISTANT: There is a flight 1024 of AA airlines matches your requirements. would you like me to book the ticket?

USER: OK, please book the ticket.

ASSISTANT: Your ticket is booked.

USER: Thanks for helping me.

ASSISTANT: Thank you, have a good day.