You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Emily Allen here.

ASSISTANT: Allen, how can I assist you?

USER:  I am planning to book a flight ticket to DFW from MCO, could you please search any inexpensive flight?

ASSISTANT: Sure, can you please tell me your travel dates?

USER: Sure, my planned trip dates are 09/27 and 09/29.

ASSISTANT: Please wait for a while.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no flight available on your preferred dates.

USER: Ok, no problem. Thank you for your help.

ASSISTANT: You are welcome and have a nice day.