You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am planning to move to Houston, Can you please help me in booking my ticket?

ASSISTANT: Sure, I can help you. Can you please tell me your travel airport codes?

USER: My preferred airport codes of travelling are from CLT to IAH.

ASSISTANT: Meanwhile, can I know your name?

USER: Myself Brenda Garcia.

ASSISTANT: What are your planned dates for the following trip?

USER: I have planned to move from 12/26 to 12/28.

ASSISTANT: Sorry, there are no flights available on your required dates.

USER: Ok, that's fine I'll choose other option to fly. Thank you for your help.

ASSISTANT: Thank you for reaching our services.