You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I have a plan to take my family members to Mount Evans located in Denver. Can you please help me in booking flight ticket from IAH to DEN?

ASSISTANT: Sure, may I know your name please?

USER: Ronald Clark here.

ASSISTANT: May I know on which dates you are willing to travel?

USER: I will start my journey on Feb 01 and return on Feb 03.

ASSISTANT: Is there any specific class preference for you?

USER: I don't have any class preference.

ASSISTANT: May I know your airline preference to travel?

USER: No.

ASSISTANT: May I know your preferable time for journey?

USER: I am okay with any timing.

ASSISTANT: May I know your connection limit please?

USER: I prefer to travel in connecting flight.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that, there is no flight available as per your travelling dates.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for reaching us.