You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning my trip to travel Houston. Can you please help me in reserving the ticket from PHX to HOU?

ASSISTANT: Sure, may I know your planned trip dates?

USER: I would like to travel on Aug 18 and again I will return back on Aug 20.

ASSISTANT: Do you have any connection limit?

USER: I am comfort to travel in single connection flight.

ASSISTANT: Any other requirements to be met?

USER: No, I don't have any other specifications.

ASSISTANT: May I know your good name?

USER: Myself Barbara Carter.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Not a big deal, anyhow thank you very much for your kind information.

ASSISTANT: Thank you for reaching us.