You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Catherine Thomas. I want to book a ticket from SFO to AUS, can you help me?

ASSISTANT: Sure, I will help you with that. Can you please provide your planned dates of travelling?

USER: My travel dates are 02/23 and 02/25.

ASSISTANT: Please wait a moment to check the flights.

USER: Ok.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 700 is provided by Spirit airlines. Shall I proceed with this?

USER: My price limit is 200.

ASSISTANT: Sorry, there are no flights available within that price.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.