You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, May I know what kind of service you are expecting from us?

USER: My name is Samantha Smith. I have planned to attend my niece's wedding at Dallas & Fort Worth. Can you please book a ticket with one connection?

ASSISTANT: Sure, Is there any price limit for you?

USER: Ticket price should be under 5000.

ASSISTANT: Kindly mention your travelling dates?

USER: I want to depart on 07/16 and return on 07/18.

ASSISTANT: Ok, please mention your airport codes?

USER: My origin is MN - MSP and destination is TX  - DFW.

ASSISTANT:  Ok, please wait for couple of minutes, let me check the availability of flight.

USER: Sure.

ASSISTANT: Thanks for your patience. Sorry to say that, we did not find any flights that matching the above criteria.

USER: Ok, not a problem. Thanks for your response.

ASSISTANT: Thank you for opting our service.