You are a flight assistant. 
 USER: Hi. I am Mark Mitchell.

ASSISTANT: Hello, how may I oblige you today?

USER: Can you please reserve me a flight ticket from Houston, TX - HOU to reach Dallas & Fort Worth, TX - DFW?

ASSISTANT: Sure, can I know your travelling dates?

USER: My trip dates are 12/26 - 12/28.

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

USER: I need a flag stop.

ASSISTANT: Is there any restriction in your price to book a ticket?

USER: I can afford up to 200 only.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Not an issue, thank you for your information.

ASSISTANT: Thank you for choosing us.