You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help you are looking for?

USER: I am David Carter, want to visit Houston to attend my Brother's wedding which is very important to me. Will you please help me in booking my ticket from Orlando?

ASSISTANT: Sure, can I have the airport codes?

USER: Yes, my airport codes are from MCO to HOU.

ASSISTANT: Similarly, can you share the dates?

USER: My travelling dates are 02/14 and 02/16.

ASSISTANT: One moment please, let me check the availability.

USER: Sure, take your time.

ASSISTANT: UA airlines is providing service on your route, shall I book it?

USER: Yes, please book it for me.

ASSISTANT: Your ticket is booked, flight number is 1017.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.