You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: On the name of Mark Martin, book a ticket to San Francisco, SFO to attend a wedding.

ASSISTANT: Sure. May I know your travelling dates?

USER: Travelling dates are 02/29 and 03/02.

ASSISTANT: Let me know your origin.

USER: Houston, HOU is the source point.

ASSISTANT: Do you have any preferences?

USER: Connection is to be 1. With price limit of 5000.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: There is a flight 1014 in Spirit airline and price 100 with a connection.

USER: Proceed with this flight.

ASSISTANT: Your ticket has been booked.

USER: Thank you for being helpful.

ASSISTANT: Thank you.