You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you reserve a flight ticket with the name of Stephanie Martinez as I want to surprise my sister on her birthday?

ASSISTANT: Sure, can I know your departure and arrival date?

USER: My depart date is 12/19 and return date is 12/21.

ASSISTANT: Kindly, mention your airport locations?

USER: I want to fly from Austin, AUS. Washington, IAD is my landing point.

ASSISTANT: How much can you spend for flight ticket.

USER: I ca afford up to 500.

ASSISTANT: Do you need any connection limit?

USER: Yes, there should be a lay by.

ASSISTANT: Thanks for waiting. We found an airline UA of flight number 1004 with price 100. Shall I book it for you?

USER: Yes, you can.

ASSISTANT: Thank you for reaching us.

USER: Thank you for assisting me.