You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know your name please?

USER: I am John Gonzalez.

ASSISTANT: Yes, how can I help you?

USER: As a scientist, I would like to go Space Center at Houston for my next project, please help me with booking a flight ticket.

ASSISTANT: Please tell me your location airport codes?

USER: My source airport code is DFW and destination airport code is HOU.

ASSISTANT: Ok, how long is your trip?

USER: It will be from 07/11 to 07/13.

ASSISTANT: Yes, there is a flight available with 1 connection.

USER: Sorry, but I don't want to travel with 1 connection. Please don't proceed with the booking.

ASSISTANT: Then Sorry.

USER: Thank you for your time.

ASSISTANT: Thank you for connecting with us.