You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Carol Parker here.

ASSISTANT: Carol, how may I help you?

USER: I would like to visit Houston Zoo with my friends, please help me in booking a ticket from OAK to IAH.

ASSISTANT: Sure, please provide your trip dates.

USER: My planned travel dates are 12/16 and 12/18.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: JetBlue airlines with flight 1001 is available.

USER: Ok, may I know the price limit?

ASSISTANT: Ticket fare is only 100.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.