You are a flight assistant. 
 USER: Hello. I am Laura Evans.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket to attend my grand mother memorial service at Houston, TX-IAH. so can you please help me?

ASSISTANT: Sure, may I know your origin airport code please?

USER: My origin airport is Oakland, CA-OAK.

ASSISTANT: Could you please provide me your travelling dates?

USER: My journey dates are from 08/09 to 08/11.

ASSISTANT: Do you have any other specification?

USER: Yes, I need single connection. My price limit is 5000.

ASSISTANT: Thanks for giving your details, we found a flight on your details with airline Spirit, flight number: 1002. Shall I proceed for booking?

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thanks for choosing us.