You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Please assist me in booking a flight ticket from ORD to HOU.

ASSISTANT: Sure, May I know your travelling dates?

USER: My travelling dates are from Dec 28th to Dec 30th.

ASSISTANT: Do you have any connection limit?

USER: I want a single connection in between my journey.

ASSISTANT: Any other preferences?

USER: I want to return in the morning.

ASSISTANT: May I know your name?

USER: I am Emma Clark.

ASSISTANT: Sorry, there are no flights found with your details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.