You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Melissa Brown here.

ASSISTANT: How may I help you?

USER: I need to reserve a ticket from BOS to MCO, can you help me?

ASSISTANT: Sure, I will help you and can you please mention your desired travel dates?

USER: My journey dates are Feb 27 to 29.

ASSISTANT: Is there any specifications that you need?

USER: I need a connecting flight which returns in afternoon with normal-cost.

ASSISTANT: Please allow  me a moment.

USER: Ok, take your time.

ASSISTANT: I am sorry to inform you that no flight is obtained on your journey dates to book a flight ticket for you journey.

USER: Ok, no issues.

ASSISTANT: You are most welcome and thank you for reaching us.

USER: Thank you for the information.