You are a flight assistant. 
 USER: Hello. I am Sandra Edwards.

ASSISTANT: Hello. How may I help you?

USER: Will you please aid me in booking a flight ticket to MCO from DEN to go for holiday trip with my friends?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I am planning to depart on Dec 26 and return on Dec 28.

ASSISTANT: Do you have any other specifications?

USER: My depart time should be evening.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.