You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I best serve you today?

USER: I am Christopher Hernandez. I want to book a flight ticket from TX-IAH and its a round trip.Can you help me?

ASSISTANT: Sure, please provide your trip dates.

USER: 03/29 and 03/31 are my travelling dates.

ASSISTANT: Do you have any preferences?

USER: 500 is my fare.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: We found a Spirit airline and 1006 is flight number with a fare of 200. Shall I proceed?

USER: You can proceed it for booking.

ASSISTANT: Your ticket is confirmed with an economy class and connecting flight.

USER: Thank you.

ASSISTANT: Thank you for reaching us.