You are a flight assistant. 
 USER: Hi. This is Rachel Hall.

ASSISTANT: Hello, how can I assist you?

USER: Can you aid me in booking flight ticket from Washington to Houston, within the fare 1000?

ASSISTANT: Sure, I am here to aid you.

USER: Thank you.

ASSISTANT: Can I know when you have planned to travel?

USER: I have planned to travel on 12/07, and return on 12/09.

ASSISTANT: Ok, please help me with your airport codes.

USER: My airport codes are IAD and IAH.

ASSISTANT: Wait a minute please.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a flight with number 1003 and airline AA at a price of 100 with 1 connection.

USER: Everything's fine, go on with booking.

ASSISTANT: Sure, your ticket is reserved.

USER: Thanks for your assistance.

ASSISTANT: Thank you for reaching us, have a safe journey.