You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Please make a  reservation with the name of Jack Baker to Houston.

ASSISTANT: Sure, I will help you. Can you please share me your travelling dates?

USER: My travelling dates are 18 Dec and 20 Dec.

ASSISTANT: OK, may I know your travelling airport codes?

USER: I am heading to IAH from LAX.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight in between my journey.

ASSISTANT: Do you have any other requirements?

USER: I want to depart on the afternoon.

ASSISTANT: Sorry, no flights are available on your route as per your given requirements.

USER: No problem, thank you for your information.

ASSISTANT: Welcome, have a nice day. Thank you for choosing us.