You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I would like to book a ticket from EWR to HOU, can you please help me with that?

ASSISTANT: Sure, I am happy to help you. May I know your name?

USER: Charles Adams here.

ASSISTANT: Thank you. Please provide us your travel dates.

USER: The travel dates are from 04/04 to 04/06.

ASSISTANT: Sure. Do you have any connection limit preference for this trip?

USER: I need a flight with 1 connection limit.

ASSISTANT: Do you have any other concerns?

USER: I would like to return during evening time.

ASSISTANT: Sure, please wait for a while. Let me check.

USER: Ok.

ASSISTANT: Sorry, there is no flight available as per your requirements.

USER: That's ok, thank you for your help.

ASSISTANT: You are most welcome.