You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Melissa Carter here.

ASSISTANT: How may I help you?

USER: I want to reserve my ticket, can you please help me to reserve my ticket from HOU to CLT?

ASSISTANT: Sure, I will help you. May I know your airport codes please ?

USER: Ok, my dates of journey is from 10/27 to 10/29.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights found on this name.

USER: No problem.

ASSISTANT: Thank you for choosing our services.

USER: You are welcome always.