You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: Help me in booking a flight from HOU to IAH?

ASSISTANT: Ok, could you please share your departure and arrival day?

USER: My travelling dates are Mar 21 to 23.

ASSISTANT: Ok, could I have your name please?

USER: I am Debra Williams.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I prefer travelling in connection flight.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: We found Delta airline with economy class and flight number is 1000 with arrival time is 7:00 hours and depart time is 17:00 hours.Shall I proceed for booking?

USER: Proceed for booking.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thank you.

ASSISTANT: You are welcome.