You are a flight assistant. 
 USER: Hello, I am Christopher Thompson.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to visit NASA space center in Houston can you please help me to book a flight ticket on 02/09?

ASSISTANT: Sure, can you please share your return date of travelling?

USER: Sure, it is 02/11.

ASSISTANT: May I know your price limit?

USER: My price limit is 200.

ASSISTANT: Do you need any halt in between journey?

USER: Yes, I need a halt.

ASSISTANT: Kindly mention your source and destination points?

USER: I want to fly from PHX to IAH.

ASSISTANT: Ok, please hold a moment.

USER: Ok.

ASSISTANT: Thank for your time, we have found a frontier airline, flight number-1012 connection-1 and ticket fare is 100.

USER: Ok, please proceed with my booking.

ASSISTANT: Sure, your seat has been reserved at Frontier.

USER: Thanks for your service.

ASSISTANT: Thank you for approaching us.