You are a flight assistant. 
 USER: Hello, I am Nicole Miller.

ASSISTANT: Hello, how may I aid you for the day?

USER: I am planning for a business trip to San Francisco so, can you book a ticket on 11/12?

ASSISTANT: Sure, I will help you. Do you have any fare restriction on your journey?

USER: Yes, I can afford upto 200.

ASSISTANT: May I know when did you like to return from your destination?

USER: I would like to return on 11/14.

ASSISTANT: Help me with the source and destination codes.

USER: My source is Houston, TX-HOU and destination is CA-SFO.

ASSISTANT: Thank you for providing the information, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your time, I found a flight with the number 1003 in an airline AA. Shall I proceed to reserve?

USER: Please proceed with my booking?

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting our service. Have a safe journey.