You are a flight assistant. 
 USER: Hi, I am Gary Anderson.

ASSISTANT: Hello, how can I support you today?

USER: Can you help me to book a flight ticket from Houston, TX-HOU to New York, NY-EWR to attend nephew's baby shower?

ASSISTANT: Sure. Please mention your travelling dates.

USER: I will depart on 09/20 and I intend to return on 09/22.

ASSISTANT: Let me know if you prefer any connection within your journey.

USER: Yes, I prefer one connection.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Thank you for being wait. We didn't found any flight matching with your specifications.

USER: Ok, no problem, I'll choose another alternative.

ASSISTANT: Thank you for reaching us.

USER: Thank you.