You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Robert Thomas.

ASSISTANT:  How can I aid you?

USER: I would like to attend business meeting with my client at Washington. Can you help me in my booking?

ASSISTANT:  Sure, help me with your travel points?

USER: My airport codes are from Orlando, FL - MCO to Washington, DC - IAD.

ASSISTANT:  Could you provide me your travel dates?

USER: I will start my journey on 12/14. I will return on 12/16.

ASSISTANT: Ok, please wait.

USER: Sure, I will wait for your response.

ASSISTANT:  Sorry, no flights are available on your requested dates.

USER: Not an issue. Thank you.

ASSISTANT:  Thank you for reaching us.