You are a flight assistant. 
 USER: Hi, Rachel Campbell here.

ASSISTANT: Hello. How can I assist you today?

USER: I need to book a flight ticket from LAX to DFW to enjoy film festivals. Can you help me in booking a connected flight?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Sure, my scheduled dates are May 30 and Jun 1.

ASSISTANT: Do you have any other specifications?

USER: I would prefer depart time at morning. And I need a economy class.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Welcome, have a great day.