You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to flight booking agency.

USER: I am Ruth Turner.

ASSISTANT: How may I aid you today?

USER: I am planning to visit Museum of Fine Arts at Houston, could you please help me with booking a flight ticket?

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

USER: I would like to take off on 03/04 and return on 03/06.

ASSISTANT: Could you please provide the airport codes?

USER: My nearest source airport code is DEN and destination airport code is HOU.

ASSISTANT: Ok, please allow me a moment while I check for the availability of flight on this route.

USER: Sure.

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

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: You are welcome. Thank you for contacting us.