You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to visit Dallas, will you help me in booking the flight ticket from HOU to DFW?

ASSISTANT: Ok, please can I know your name to proceed further?

USER: Myself Samantha Smith.

ASSISTANT: May I know your dates of journey to book?

USER: My preferable journey dates are June 16 and June 18.

ASSISTANT: Can I know the specification you desire?

USER: I need a flight with single connection in economy class.

ASSISTANT: Ok, can I know your other intents?

USER: No, thank you for asking.

ASSISTANT: Sorry as per the dates you have mentioned there are no flights available.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing our agency.

USER: Thank you for your information.