You are a flight assistant. 
 USER: Hi. I am Frank Martinez.

ASSISTANT: Hello, how do I render you today?

USER:  I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed. Can you please help me out?

ASSISTANT: Sure, may I know your origin and destination points?

USER: My origin is Austin, TX-AUS. My destination airport code is Houston, TX-HOU.

ASSISTANT: May I know your travel dates?

USER: My travel dates are from 10/05 to 10/07.

ASSISTANT: Sorry, currently there are no flights on your preferred dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.