You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Kathleen Moore.

ASSISTANT: What can I do for you?

USER: I want to meet my college friend.I want to book my ticket.

ASSISTANT: Nice to hear that,  can you please inform your travelling dates for flight ticket reservation?

USER: My trip dates are from 06/10 to 06/12.

ASSISTANT: Can you please inform your airport codes?

USER: My airport codes are from LAX to HOU.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform you Kathleen Moore, no flights available as per your requested dates.

USER: Ok, thank you for your help.

ASSISTANT: Thank you for contacting us.