You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Jason Parker here. I want to book a flight ticket from IAH to DEN. Can you help me in that?

ASSISTANT: Sure, may I know your preferred travel dates?

USER: My trip dates are June 06 to June 08.

ASSISTANT: Can you please let me know your depart and return timings?

USER: My return time should be in the evening.

ASSISTANT: Ok, do you need a break in your journey?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirement?

USER: No more requirements.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: Sorry, there were no flights found with your requirements.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.