You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Andrew Clark, I want to book a flight under fare of 500 to visit my grand father. Can you help me to book a connecting flight?

ASSISTANT: Sure, please provide your journey dates.

USER: I will fly on 03/01 and planned to return on 03/03.

ASSISTANT: Ok, Could you please help me with your source and destination?

USER: I will travel from TX-HOU to TA-IAH.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight in 1018 Hawaiian plane with price 100.

USER: Please proceed with booking.

ASSISTANT: Sure, your ticket has been booked. Thank you for choosing us.