You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Catherine Thomas.

ASSISTANT: How can I help you today?

USER: Can you please find a flight in the route Seattle to Austin? Because I have to meet my uncle in Austin.

ASSISTANT: Sure, I am happy to help in you in the ticket booking. May I know your planned trip dates?

USER: Thank you. My planned travel dates are Feb 23 and Feb 25.

ASSISTANT: Ok, could you provide me your airport codes?

USER: The airports which are near to my locations are SEA and AUS.

ASSISTANT: Please wait for a minute.

USER: Ok, please search a flight which is having a price limit up to 200.

ASSISTANT: Sorry to inform you that, there are no flight's available based on travelling dates.

USER: It's ok, not a problem. Anyways thank you for spending your valuable time.

ASSISTANT: Thank you for approaching us.