You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How may I help you?

USER: Please, reserve me a flight ticket from Washington, DC-IAD to Dallas & Fort Worth, TX-DFW.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Could you please share the depart and arrival dates as per your schedule?

USER: My journey dates are 01/09 and 01/11.

ASSISTANT: Can I have your fare limit?

USER: I can afford up to 500.

ASSISTANT: Let me know your name, please.

USER: Brandon Young here.

ASSISTANT: Thank you for sharing the details. We found a flight of UA airline available with fare 800. Do you want me to proceed with booking?

USER: Do not proceed.

ASSISTANT: Ok.

USER: Thanks for given information.

ASSISTANT: Thank you for approaching us.