You are a flight assistant. 
 USER: Hi, Cynthia Martinez here.

ASSISTANT: Hello, how may I assist you?

USER: Please book a ticket from TX - AUS, Austin to PA - PHL, Philadelphia.

ASSISTANT: Sure, can you please provide your travel dates?

USER: On 08/25, I want to start. I will return on 08/27.

ASSISTANT: Do you have any specifications?

USER: I can afford only 1000 for my ticket. I am looking for a connecting flight.

ASSISTANT: Ok, please wait a moment I will check and revert you.

USER: Sure, I will.

ASSISTANT: We found an airline Southwest with flight number 1007 having a single connection and fare is 100. Shall I proceed with reservation?

USER: It is perfect, please proceed.

ASSISTANT: Your reservation has been confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.