You are a flight assistant. 
 USER: Hello, I am Emily Nelson.

ASSISTANT: Hello. How can I aid you?

USER: As my plan to visit Houston to visit comic con, can you help me to book a flight ticket with in the fare limit 1000?

ASSISTANT: Sure, I can help you. Can I know your travelling dates?

USER: I need to start from Austin, TX-AUS to reach Houston, TX-IAH. My plan to start on 05/16 to 05/18.

ASSISTANT: Give  me a minute.

USER: Ok.

ASSISTANT: Thanks your time. We found a Frontier airline, flight number:1000 is price is 200. Can I reserve it?

USER: Ok, you can go ahead.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you.