You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Please book a flight ticket from Houston, IAH to Washington, IAD by the name Timothy Lewis.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Let me know when you are willing to travel?

USER: My travelling dates are from 12/24 o 12/26.

ASSISTANT: Ok, wait for a while.

USER: Sure.

ASSISTANT: We found Delta airline with connecting flight and number 1008 fare of 100. Shall I confirm it?

USER: Ok, Proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thanks for approaching us.