You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Melissa Harris here.

ASSISTANT: Harris, how can I assist you?

USER:  I am having emergency to fly Charlotte. So, I would like to book a flight ticket with 0 connection limit. Can you please help me about it?

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

USER: Ok, I want to fly on 03/26 and back on 03/28.

ASSISTANT: Ok, may I know your source and destination airport codes?

USER: My airport codes are MCO - CLT.

ASSISTANT: Sorry Harris, there are no direct flights available on your preferred dates.

USER: No problem, thank you for your quick response.

ASSISTANT: You are welcome and thank you for choosing us.