You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to reserve flight ticket from DEN to HOU, can you please help me?

ASSISTANT: Sure, please share your journey dates?

USER: My planned travelling dates are Jan, 30 and Feb, 01 respectively.

ASSISTANT: Do you have any specifications?

USER: Flight has to be with single connection and I have to return at morning.

ASSISTANT: Is there any class preferences?

USER: I am comfortable to travel in any class.

ASSISTANT: May I know your good name?

USER: Sure, my name is Jerry Williams here.

ASSISTANT: Sorry, no flights found on your given details.

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

ASSISTANT: Thank you for choosing us.