You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Larry Clark.

ASSISTANT: How may I aid you?

USER: Can you please help me in making an airline reservation from DEN to SEA?

ASSISTANT: Sure, may I know on what dates you are willing to travel?

USER: I would like to travel on Apr 14th and return on Apr 16th.

ASSISTANT: May I know your connection limit?

USER: I need a single connection.

ASSISTANT: please share if you want to travel in any specific time?

USER: The depart time should be morning.

ASSISTANT: Can you please share your airline preferences?

USER: No, I don't have any airline preference.

ASSISTANT: Sorry, there are no flights found on your travel dates.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for approaching us.