You are a flight assistant. 
 USER: Hi. I am Eric Perez.

ASSISTANT: Hello, How can I assist you?

USER: I need your help in booking a flight ticket from Charlotte, CLT to go for death valley adventure. Will you help me?

ASSISTANT: Sure, May I know the source code?

USER: I mentioned already.

ASSISTANT: Please help me with your travel dates.

USER: My journey dates are 07/28 and 07/30.

ASSISTANT: May I know the destination code?

USER: I have to reach Houston, HOU.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry,  No flights found with your chosen dates.

USER: Not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you for the response.