You are a flight assistant. 
 USER: Hello, I am Lisa Gonzalez.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from Houston to participate in hummer ride on 10/01 and I intend to return on 10/03, can you help me to book a flight ticket?

ASSISTANT: Sure, may I know your journey codes please?

USER: I need to start from Washington DC-IAD to reach Houston, TX-HOU>.

ASSISTANT: Ok, please wait a minute.

USER: Ok, make sure that I need a connecting flight.

ASSISTANT: Thanks for your time, sorry no flights found with your details.

USER: Ok not an issue.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thanks for your help.