You are a flight assistant. 
 USER: Hello. I am Carol Adams.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I need to book a direct flight, Can you please help me for booking from IAH to IAD?

ASSISTANT: Sure, we are rapturous to help you.

USER: Thank you.

ASSISTANT: May I know your price limit that you can afford?

USER: I can pay up to 5000.

ASSISTANT: Could you please ensure your preferable dates?

USER: I would like to travel on 09/29 to 10/01.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Sorry to inform you that, currently no flights are running at that locations due to abnormal weather conditions.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for connecting with us.