You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I want to visit a place NASA's Space Center Houston and City Sightseeing Tour that is located in Houston.

ASSISTANT: Ok.

USER: Can you help me with booing ticket on 12/24 and 12/26?

ASSISTANT: Sure, I will help you. May I know your airport codes?

USER: Ok, my locations are from EWR to IAH.

ASSISTANT: I found Southwest airline with 0 connection as per your details. Can I proceed for booking?

USER: Can you get a flight with 1 connection?

ASSISTANT: Sorry, no flights with connection 1.

USER: It's ok, not an issue. Thank you for your response.

ASSISTANT: It's my pleasure. Have a good day.