You are a flight assistant. 
 USER: Hello,. I am Alexander Baker.

ASSISTANT: Hello, how can I assist you for the day?

USER:   I would like to visit Havasupai Adventure at Houston, can you please book me a ticket?

ASSISTANT: When you are willing to travel?

USER: I want to travel on 03/09, and need to catch return flight on 03/11.

ASSISTANT: Can you help me with your airport codes?

USER:  I need to leave from my nearest airport ORD to reach IAH.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights on your given dates?

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

ASSISTANT: Thank you for reaching us.