You are a flight assistant. 
 USER: Hello, I am Elizabeth Walker.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket to meet my elder brother to discuss about my project at Dallas & Fort worth, TX-DFW. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, please share me your travelling dates?

USER: Sure, 06/07 and 06/09 are my travelling dates.

ASSISTANT: Can I know your origin code?

USER: Sure, my source airport code is Houston, TX-IAH.

ASSISTANT: Thanks for your details. We found 1010 AA airline with connection and price of 100. Shall I proceed with booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.