You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you out?

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

ASSISTANT: Sure, we are glad to help you. On which dates would you like to travel?

USER: My preferable journey dates are Dec 06 and Dec 08.

ASSISTANT: Do you prefer any stopover in between journey?

USER: I need a flight with single connection.

ASSISTANT: Is there any other specifications for you?

USER: No, thank you for asking.

ASSISTANT: Please help me with your good name.

USER: Myself John Clark.

ASSISTANT: Sorry, no flights are available with your requirements.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.