You are a flight assistant. 
 USER: Hi, Gary Hall here.

ASSISTANT: Hello. How may I assist you?

USER: I am am looking for a cheaper flight as my budget is 200, Can you help me in finding?

ASSISTANT: Sure, may I know your travel dates?

USER: My depart is on 08/15 and return is on 08/17.

ASSISTANT: Could you please share me your airport codes?

USER: CLT - EWR are my codes.

ASSISTANT: We found a flight on your details with airline Southwest, flight number: 1005. Shall I book this ticket?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your support.

ASSISTANT: Thank you.