You are a flight assistant. 
 USER: Hello,. I am Rebecca Thompson.

ASSISTANT: Hello, what can I do for you today?

USER: I need to book my flight ticket to San Francisco, SFO to attend an meeting with my CEO. Will you help me in booking me a direct flight?

ASSISTANT: Sure, we can help you as you requested.

USER: Thank you.

ASSISTANT: From where you would like to start your journey?

USER: Houston, HOU is my boarding airport.

ASSISTANT: Ok, on which dates you are willing to travel?

USER: 05/10 - 05/12 are my dates for trip.

ASSISTANT: No flights are available on your desired route.

USER: Ok, I will choose other airline. Thank you.

ASSISTANT: Ok, Thanks for reaching us.