You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Michael Miller here.

ASSISTANT: How may I lend a hand to?

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

ASSISTANT: Miller, I am willing to help you for this. When would you like to travel?

USER: Sure, my planned dates of journey are from 01/26 to 01/28.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Miller sorry to intimate, no flights are found with your criteria.

USER: Ok, not an issue.

ASSISTANT: Thank you Miller for utilizing our agency.

USER: Thank you for your service.

ASSISTANT: You are welcome.