You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I support you?

USER: Myself Dennis Miller from San Francisco.

ASSISTANT: Ok.

USER: I would like to travel from SFO to ATL for an important meeting, can you please search is there any flight available for me or not on those locations?

ASSISTANT: Sure, when would you like to travel?

USER: Thank you for your response, I want to take off on July 22 and book my return ticket also on July 24.

ASSISTANT: Do you have any other preferences?

USER: I want to return in evening time so please check with this.

ASSISTANT: Sorry, we did not find any flights running in your preferred dates.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.