You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Here Raymond Scott. Due to an emergency case, I have to travel to Denver in the month of March. So can you please help me in flight ticket booking from IAH region?

ASSISTANT: Sure, can you please share your travel dates?

USER: Thank you and my planned travel dates are 03/09 and arrival back on 03/11.

ASSISTANT: Could you please help me with the destination airport code?

USER: Sure, my destination region airport code is CO-DEN.

ASSISTANT: Let me check for the availability of flight.

USER: Sure, take your time.

ASSISTANT: Raymond, I am sorry to inform you that there is no flight available at your requested dates.

USER: Ok, that's fine. I can ask one of my friend to help me out to reach my destination region. Thank you for your response.

ASSISTANT: Thank you for contacting us.