You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Frank Williams. Could you please find a flight for a round trip from Houston city? Because I have planned to meet my childhood friends.

ASSISTANT:  Certainly, could you please share your departure and arrival dates?

USER: Thank you. My departure and arrival dates are 04/10 and 04/12.

ASSISTANT: May I know your preferred airport code?

USER: The source and destination airport codes are same, that is IAH.

ASSISTANT: There is a connecting flight 1009 available for you, shall I book it?

USER: If the ticket fare is less than 1000, then only proceed to book my flight ticket.

ASSISTANT: Your ticket has been booked with price 200.

USER: Thank you for assisting me in searching the flight and reserving the flight ticket.

ASSISTANT: You are welcome.