You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am Jason Nelson. I am planning to meet my father who are staying in Phoenix AZ-PHX, can you please book a flight ticket from TX-DFW?

ASSISTANT: Sure, May I know the travel dates?

USER: My travel dates are 08/16 and 08/18.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with single connection.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We have found a connecting flight from UA airline with flight number 1020. Shall I proceed?

USER: You can proceed.

ASSISTANT: Your ticket has been booked with the flight number 1020.

USER: Thank you.

ASSISTANT: Thank you for opting us.