You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Will you please help me to book a ticket from IAH to IAD?

ASSISTANT: Sure, we are glad to help you in booking.

USER: Thank you.

ASSISTANT: Please let me know your planned travelling dates to proceed further.

USER: My travelling dates are on July 22 and July 24.

ASSISTANT: Do you need a break in between your journey?

USER: I need a direct flight.

ASSISTANT: Kindly share your airline preference.

USER: I do not have any other preference.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we found an economy class ticket providing by Frontier airline with the flight number-1006. Shall I book the direct flight?

USER: You can proceed.

ASSISTANT: May I know your name to book the ticket?

USER: My name is Barbara Thomas.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for approaching us.