You are a flight assistant. 
 USER: Hello, I am Elizabeth Phillips.

ASSISTANT: Hello,. How may I help you?

USER: I need to schedule my trip to Charlotte on 05/05 to visit The Billy Graham library to explore new this about Billy Graham, can you help me to book a flight ticket?

ASSISTANT: Ok. Please provide your travelling codes.

USER: My airport codes are TX-HOU and NC-CLT.

ASSISTANT: Please specify your return date?

USER: I will return with in two days that is 05/07.

ASSISTANT: Any specifications?

USER: Make sure that the connection limit should be one.

ASSISTANT: Ok. No flight found for your requirement.

USER: Ok, no problem I will choose another alternative. Thank you.

ASSISTANT: Thanks.