You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Will you please book me a flight ticket from IAH to LAX?

ASSISTANT: Sure, please share me your travel dates.

USER: I will start on Jan 6th and return on Jan 8th.

ASSISTANT:  Can I know your good name please?

USER: I am Benjamin Evans.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: That's alright, thanks for your assistance.

ASSISTANT: Thank you for supporting us.