You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Frank Martinez here.

ASSISTANT: How may I assist you?

USER: I would like to travel from MCO to DEN. can you please help me to book a ticket?

ASSISTANT: Sure, we are here to help you. Kindly, mention your fare limit.

USER: Fare is 500.

ASSISTANT: When you are willing to start your journey to DEN?

USER: My travelling dates will be on 05/05 to 05/07.

ASSISTANT: Thank yo for sharing your journey details. Please, hold on.

USER: Ok.

ASSISTANT: We are very sorry to inform you that, no flights was found on your journey dates.

USER: Not a problem, thank you.

ASSISTANT: Thank you for reaching us, have a great day.