You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kevin Clark.

ASSISTANT: How may I assist you for today?

USER: I need a direct flight in my journey, can you help me in booking?

ASSISTANT: Yes, I can help you with that. Could you provide me your travelling dates?

USER: I will travel on 10/31 and return on 11/02.

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

USER: I will fly from IAH and land at LAS.

ASSISTANT: Hold on for a second, I will get back to you.

USER: Sure.

ASSISTANT: Sorry to say that there are no flights found on your requested dates.

USER: No issue, I will try with other alternative.

ASSISTANT: Thank you for reaching us.

USER: Thank you for checking.