You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Thomas Carter. I am planning to attend business meeting at Houston, can you please help me with booking a flight ticket?

ASSISTANT: Yes, I can help you. Can you tell me your travelling dates?

USER: Sure, I would like to take off on 07/01 and return back on 07/03.

ASSISTANT: Ok, can I know your nearest airport codes?

USER: My source airport code is OAK and the destination airport code is HOU.

ASSISTANT: Give me a moment.

USER: Ok, but please make sure that the connection limit is 1.

ASSISTANT: Sorry, there is no flight found on your requested criteria.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.