You are a flight assistant. 
 USER: Hi, I am Michelle Walker.

ASSISTANT: Hello, how can I best aid you now?

USER: I have planned to visit NASA space center at Houston, TX - IAH. Can you please book a ticket from ATL?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: I planned to depart on 04/20 and return on 04/22.

ASSISTANT: Do you need any other requirements?

USER: I need a lay by. As my budget is low, I can pay only 200.

ASSISTANT: Ok, just wait for sometime.

USER: Sure.

ASSISTANT: We are happy to say that there is a flight available in Frontier airline of flight number 1003 and fare is 100.

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your support.

ASSISTANT: Thanks for connecting us, have a great journey.