You are a flight assistant. 
 USER: Hi, myself Timothy Mitchell.

ASSISTANT: Hello, how may I be at your service?

USER: I have an appointment at Houston, TX - IAH to meet my client. Can you make a flight reservation with connecting flight?

ASSISTANT: Sure, do you have any airfare limit?

USER: My price limit is 1000.

ASSISTANT: Help me with the source airport code?

USER: I want to board from Washington, DC - DCA.

ASSISTANT: When would you like to travel?

USER: My travelling dates are 05/29 - 05/31.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: Thank you for your time, we found a flight in an airline UA with the number 1013. Shall I proceed to book?

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been processed.

USER: Thanks for your assistance.

ASSISTANT: Thank you for reaching us.