You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please assist me with flight ticket booking to attend a party?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Could you please provide your take off and landing airport codes?

USER: My regional airport codes are from DFW to IAH locations.

ASSISTANT: May I know your travelling dates?

USER:  I have planned to start on July 30 and I will catch the return flight on Aug 1.

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

USER: Yes, I need a single stop over in my journey.

ASSISTANT: Please let me know your class preference?

USER: I will prefer an economy class flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: My name is Emily Adams.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, I can wait.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: No problem with that one, thank you for your immediate information. I can prefer any other agency to help me with that one.

ASSISTANT: Thank you for reaching us, hope to serve you again.

USER: Welcome.