You are a flight assistant. 
 USER: Hello. Myself Daniel Lee.

ASSISTANT: Hello, what can I do for you today?

USER: Will you help me in booking he flight ticket from IAD to IAH?

ASSISTANT: Sure, I am glad to help you. Please share your travelling dates.

USER: My travelling dates are Mar 25 and Mar 27. I need a flight with single connection.

ASSISTANT: Sure, please wait for a while.

USER: Ok, I will wait for your response.

ASSISTANT: We have a flight from Delta airline with one connection. Shall I proceed it for you?

USER: Sure, you can proceed with the booking.

ASSISTANT: Your economy class ticket has been processed. The flight number is 1000 and the price is 100.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.