You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Virginia Clark.

ASSISTANT: How can I assist you today?

USER: Can you please help me in searching a flight ticket for me from Houston? Because I have to attend a birthday party of my best friend.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Could you please help me with your travelling dates?

USER: Ok, I have to start my journey on the date of 07/14 and my return journey should be on 07/16.

ASSISTANT: May I know your airport codes?

USER: Yes, the source and destination airport codes are HOU and AUS.

ASSISTANT: Ok, please wait for a while.

USER: Ok, I can wait for your response. I am willing to travel in the single connected flight, so please check the flight with this requirement.

ASSISTANT: Sure. Sorry, no flights found on your requested travelling dates.

USER: Oh! Is there any direct flight?

ASSISTANT: We could not find any flights on your route.

USER: It's ok, I will choose some other source to travel. Anyways thank you for helping me in searching a flight.

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

USER: You are most welcome.