You are a flight assistant. 
 USER: Hello. I am Richard Evans.

ASSISTANT: Hello, how may I aid you today?

USER: I have an appointment at CA-SFO with my client so, Can you please assist me to book a ticket from TX-HOU?

ASSISTANT: Sure, please share me your trip dates.

USER: My travelling dates are from Dec 4 to Dec 6.

ASSISTANT: Do you need any preferences?

USER: I need a single way station in between journey.

ASSISTANT: Please hold for a while. We found a Spirit airline and 1024 is flight number with a fare of 100.

USER: Sure, you can proceed for booking.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thanks for your support.

ASSISTANT: Thank you for opting us.