You are a flight assistant. 
 USER: Hi, I am David Roberts from Boston.

ASSISTANT: Hello, how may I assist you?

USER: I would like to book a flight to Houston to submit my project, will you help me in booking a ticket to TX - IAH?

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, my travelling dates are on 09/23 to 09/25.

ASSISTANT: Can you please share me your origin airport code?

USER: My origin airport code is MA - BOS.

ASSISTANT: How much you can afford for this ticket?

USER: I can afford up to 1000.

ASSISTANT: We found a flight on your details with airline Delta, flight number: 1007. Shall I book this ticket?

USER: Ok, please book it.

ASSISTANT: Your ticket has been booked.

USER: Thank you so much.

ASSISTANT: Thank you so much.