You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I want to have a direct flight to Houston. Can you please help me to book a flight ticket?

ASSISTANT: Sure, please forward your journey locations?

USER: My journey dates are 04/26 and 04/28.

ASSISTANT: Is there any restriction in your budget limit?

USER: My journey locations are source is CLT and destination code is IAH. Yes, I want a my budget limit is 1000.

ASSISTANT: Sorry to say that there is no flights found on given dates? May I know your name please?

USER: Not an issue, thank you for the information. I am Ryan Adams.

ASSISTANT: Thank you for connecting us.