You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Helen Allen, can you help me booking flight from CLT to DFW to attend my college anniversary?

ASSISTANT: Sure Helen, please tell us when you need booking?

USER: My trip dates are 01/27 and 01/29. Provide flight with connection 1.

ASSISTANT: Sorry, there is no flight as per your connections limit.

USER: Oh! That's really sad to me, anyway thank you for your services.

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