You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Ruth Parker, want to book a flight ticket to  Houston with single connection. Can you help me with it?

ASSISTANT: Sure. May I know your travel dates?

USER: Travel dates are 12/15 and 12/17.

ASSISTANT: Is there any price limit?

USER: Make a sure the price limit is under 5000.

ASSISTANT: Can you provide me your  airport codes?

USER: Airport codes are SFO-HOU.

ASSISTANT: Ok. We found an Spirit airline with flight number 1019 and price of 200 available for you.

USER: Yes, you can proceed.

ASSISTANT: Your booking has been done.

USER: Thanks for the help.

ASSISTANT: Thank you for opting us.