You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Raymond Allen.

ASSISTANT: How can I help you?

USER: I want to visit Houston for an event, can you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your airport codes?

USER: The airport codes are ORD and IAH.

ASSISTANT: Can you please tell me the travelling dates?

USER: My preferable dates for travelling are 11/25 and 11/27.

ASSISTANT: As per your requirement I found a ticket for you.The price is 200, flight number is 1003. Can I book a ticket?

USER: That's good to hear, please confirm the booking.

ASSISTANT: I confirm your ticket successfully.

USER: Thank you for your help.

ASSISTANT: Thank you. Have a safe journey.