You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Charles Hall, I want to book ticket to meet my friend. can you help me to book a flight with single connection?

ASSISTANT: Sure, may I know your airport codes?

USER: I will fly from TX-DFW to TX-HOU.

ASSISTANT: Please provide trip dates.

USER: I will fly on 12/04 and return on 12/06.

ASSISTANT: We found a flight on your details with airline UA, flight number: 1026.

USER: Ok, please book the ticket.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me now.

ASSISTANT: Thanks for choosing us.