You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Katherine Hernandez. I am planning to travel from IAH to DEN.

ASSISTANT: Sure, could you please share your travelling dates?

USER: My date of travelling is on 07/06 to 07/08.

ASSISTANT: Do you have any requirements?

USER: I want to travel in Single connection flight in a fare of 200.

ASSISTANT: Sorry, there is no flight with 200 price limit.

USER: Ok, my budget is with in a 200 only, thank you for your help.

ASSISTANT: Thank you for choosing us, have a nice day.