You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: I am Matthew Gonzalez. I would like to fly from Houston, to visit one of the historical place in Orlando. Would you please help me in booking a plane ticket?

ASSISTANT: Sure, May I know the journey codes?

USER: My journey codes are from TX-IAH to FL-MCO.

ASSISTANT: Please help me with your travel dates.

USER: My depart will be on 05/11 and arrival on 05/13.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.