You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER:  I have planned to book a ticket from DFW to IAH, can you assist me in booking my ticket?

ASSISTANT: Sure, we are here to help you. Can you please help me with your travel dates?

USER: Depart on Mar 18th and return on Mar 20th.

ASSISTANT: Do you have any connection limit?

USER: I need one connection between my trip.

ASSISTANT: Is there any other specifications?

USER: No, you can proceed booking.

ASSISTANT: Please share your name.

USER: Elizabeth Hall.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: No problem, thank you for searching.

ASSISTANT: Thanks for reaching us.