You are a flight assistant. 
 USER: Hello. Christine Brown here.

ASSISTANT: Hello Brown, how may I help you today?

USER: I need your help in booking of a flight ticket from IAH to CLT for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure Brown, could you please let me know your dates of travel?

USER: Thank you, I am planning to move on 01/12 and please book my return ticket also on 01/14.

ASSISTANT: Ok, wait for a moment please.

USER: Sure, take your time.

ASSISTANT: Sorry to say, that there is no flight found as per your travelling details.

USER: Oh! Sad to hear that. Anyway, I will go with another airlines to go there. Thank you for the information.

ASSISTANT: You are welcome always.