You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: My name is Michelle Martinez. I am planning to attend for a free medical camp in Houston, so please book a connecting flight for me.

ASSISTANT: Sure, I am perky to help you. May I know how much amount you can afford for a ticket?

USER: I can afford up to 200.

ASSISTANT: Ok, may I know when do you like to travel?

USER: I would like to start my journey on 06/07, return on 06/09.

ASSISTANT: Could you please help me with your journey locations?

USER: My source and destination airport codes are TX - DFW, TX - IAH.

ASSISTANT: We found an airline AA of flight number 1020 has fare 300. Shall I proceed?

USER: Do not proceed, because my price limit is 200.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for availing us.