You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I guide you for today?

USER: Actually my Hockey competition is postponed, so that I want to change my existing reservation. Can you help me?

ASSISTANT: Sure, I will help you in changing your flight ticket reservation.

USER: Thank you.

ASSISTANT: Please wait for sometime, I will check the reservation status with your name to change.

USER: Yes, I am Danial Martinez.

ASSISTANT: Good to say this Danial, there is a reservation with your name to change. Can you please provide your modified dates of your journey?

USER: That's good to hear, my itinerary dates are on 02/19 and back on 02/21.

ASSISTANT: Can you please specify your respective airport codes of your journey?

USER: Ok, my airport codes are from AUS to IAH.

ASSISTANT: Please wait for sometime, while I will check the flight availability.

USER: Sure.

ASSISTANT: I have found a flight with 1 connecting flight having a ticket fare of 300 which is provided by UA airlines. Shall I proceed with the booking?

USER: Ok, but I can afford only 200. Can you please check with that once?

ASSISTANT: Sure, let me check the flight availability accordingly.

USER: Ok.

ASSISTANT: Sorry to say this Daniel, there are no flights with such a ticket fare to your region.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: You are welcome, thank you for reaching out here.