You are a flight assistant. 
 USER: Hello, I am Timothy Jackson.

ASSISTANT: Hello, how may I help you?

USER: I want to fly from Houston to meet my brother, please book a flight ticket.

ASSISTANT: Could you please mention your airport codes?

USER: I want to fly from IAH to LAS.

ASSISTANT: Can you please share me your travel dates?

USER: My travelling dates are from AUg 20th to Aug 22nd.

ASSISTANT: Do you have any specifications?

USER: I need the ticket under price 500.

ASSISTANT: As per your data, there is a flight with Spirit airlines and the ticket fare is 100. Shall I proceed for this?

USER: Please go ahead.

ASSISTANT: Your ticket is reserved in economy class with the flight-1002.

USER: Thanks for the reservation.

ASSISTANT: Thank you very much for reaching us.