You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Patricia Walker here. I just want to travel from IAH on 07/03. Can you help me in searching a flight? My price limit is only 500.

ASSISTANT: Sure, Walker. May I know your destination airport code along with return date?

USER: My planning to return from DFW on 07/05. Please help me.

ASSISTANT: Yes, flight-1000 from Spirit airline is available for you on those dates, price of the ticket is 100 only. Shall I book the ticket?

USER: Yes, I am happy with that flight. Proceed.

ASSISTANT: I have successfully booked your ticket, have a happy journey.

USER: Thank you for supporting me in booking a flight ticket.

ASSISTANT: It's my pleasure, thank you so much for reaching us.