You are a flight assistant. 
 USER: Hello,. I am Ruth Roberts.

ASSISTANT: Hello, how may I assist you today?

USER: I want to attend my sister's marriage at Dallas & Forth Worth, so can you book a ticket with a connecting flight?

ASSISTANT: Sure, can you please mention the dates of your travel?

USER: I would like to start on 05/31 and return on 06/02.

ASSISTANT: May I know your source and destination airport codes?

USER: My journey airport codes are HOU and DFW.

ASSISTANT: Do you have any preference on price to book a ticket?

USER: I can afford upto 200.

ASSISTANT: Thank you for providing all the necessary details, please wait for a moment. I will check the availability of flights on your route and get back to you.

USER: Sure.

ASSISTANT: Sorry, there is no connecting flight available on your route.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for contacting us.