You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you now?

USER: I would like to meet my uncle at Dallas, please help me in booking a ticket from BOS to DFW.

ASSISTANT: Sure, I will help you with that. Please, share me your travelling dates.

USER: My planned travel dates are on Apr 15 and Apr 17.

ASSISTANT: May I know your limit on number of connections?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any more requirements for your journey?

USER: No more requirements.

ASSISTANT: Can I know your good name to proceed further?

USER: My name is John Allen.

ASSISTANT: We regret to say that, we have not found any flights running on your desired dates of travel.

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

ASSISTANT: Thanks for opting us, have a good day.