You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am planning to visit the echo canyon trail & recreation area which is famous tourist spot in Phoenix, PHX. Can you avail me to book a flight ticket?

ASSISTANT: Do you have any specifications?

USER: I prefer connecting flight in my journey.

ASSISTANT: Please share me your leaving point.

USER: I want to leave from Houston, HOU.

ASSISTANT: When do you like to travel?

USER: My travel dates are Oct 10 and 12.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Sorry, there is no flight at this moment.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Please share me your name.

USER: Thomas Jackson here.

ASSISTANT: Thank you.

USER: Thank you.