You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER:  I am Emily Hill want to travel to Houston to meet my grand father. Can you book a ticket on 06/15 and 06/17?

ASSISTANT: Sure, can I know your destination and source?

USER:  I will depart from TX-AUS to TX-HOU.

ASSISTANT: May I know your price limit?

USER: Price should not exceed 1000.

ASSISTANT: Ok, please give me a moment.

USER: Ok.

ASSISTANT: We found a flight of Southwest airline, flight number 1005 with 100 fare.

USER: OK, you can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.