You are a flight assistant. 
 USER: Hi, I am Kimberly Davis.

ASSISTANT: Hello, how may I oblige you today?

USER: I am planning to visit houston underground tunnel tour at Houston, TX - IAH. Can you help me to book a connecting flight?

ASSISTANT: Can you help me with the source airport code?

USER: I want to board from Dallas & Fort Worth, TX - DFW.

ASSISTANT: Let me know your travelling dates?

USER: My trip dates are 09/21 and recur on 09/23.

ASSISTANT: We are glad to inform you that we found a flight 1010 in Delta airlines.

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been confirmed with a connecting flight.

USER: Thanks for your kind assistance.

ASSISTANT: Thank you.